diff --git a/verarbeitung/start_script.py b/start_script.py
similarity index 79%
rename from verarbeitung/start_script.py
rename to start_script.py
index bee6bf12ce9ca15f157d357a507ed0ff33c96a77..daf91131d11c6594d3b64d431719116bceed8cdc 100644
--- a/verarbeitung/start_script.py
+++ b/start_script.py
@@ -8,4 +8,5 @@ doi_list = []
 doi_list.append('https://pubs.acs.org/doi/10.1021/acs.jcim.9b00249')
 #doi_list.append('https://doi.org/10.1021/acs.jcim.9b00249')
 doi_list.append('https://pubs.acs.org/doi/10.1021/acs.jcim.1c00203')
-Processing(doi_list, 3, 3, 'test.json')
\ No newline at end of file
+doi_list.append('https://doi.org/10.1021/acs.jmedchem.0c01332')
+Processing(doi_list, 3, 2, 'test.json')
diff --git a/verarbeitung/construct_new_graph/add_citations_rec.py b/verarbeitung/construct_new_graph/add_citations_rec.py
index a00d1f6fc200dd30493075561833079fca9b65df..21a2c7e9f9580a17d443e19b49c6f8bafd038e1d 100644
--- a/verarbeitung/construct_new_graph/add_citations_rec.py
+++ b/verarbeitung/construct_new_graph/add_citations_rec.py
@@ -32,10 +32,12 @@ def get_cit_type_list(pub, cit_type):
 
         function to create nodes and edges and call create_graph_structure_citations
     '''
-    if (cit_type == "Citation"):
+    if cit_type == "Citation":
         return(pub.citations)
-    else:
+    elif cit_type == "Reference":
         return(pub.references)
+    else:
+        return(ValueError)
 
 def create_global_lists_cit(input_nodes, input_edges, pub, search_depth, search_depth_max, cit_type, test_var):
     '''
diff --git a/verarbeitung/construct_new_graph/export_to_json.py b/verarbeitung/construct_new_graph/export_to_json.py
index c69a61befcc402f9aee5b2184db56e0ad245618f..68a25be609cc45926899cb80359eae4460af154f 100644
--- a/verarbeitung/construct_new_graph/export_to_json.py
+++ b/verarbeitung/construct_new_graph/export_to_json.py
@@ -78,7 +78,7 @@ def output_to_json(nodes, edges, json_file = 'json_text.json', test_var = False)
     list_of_edge_dicts = format_edges(edges)
     dict_of_all["nodes"] = list_of_node_dicts
     dict_of_all["links"] = list_of_edge_dicts
-    if (test_var and json_file == 'json_text.json'):
+    if (test_var):
         with open('test_output.json','w') as outfile:
             json.dump(dict_of_all, outfile)
     else:
diff --git a/verarbeitung/construct_new_graph/initialize_graph.py b/verarbeitung/construct_new_graph/initialize_graph.py
index ba86e8bc979de42c388c5e8fe0e4ced9282500f0..89825a8018a0f4ace87a2f04c834d527605c4b57 100644
--- a/verarbeitung/construct_new_graph/initialize_graph.py
+++ b/verarbeitung/construct_new_graph/initialize_graph.py
@@ -15,6 +15,7 @@ __status__ = "Production"
 
 
 import sys  
+import gc
 from pathlib import Path
 from os import error
 sys.path.append("../")
@@ -24,6 +25,43 @@ from verarbeitung.get_pub_from_input import get_pub
 from .export_to_json import output_to_json
 from .add_citations_rec import add_citations, create_global_lists_cit
 
+def initialize_nodes_list_test(doi_input_list, search_depth_max, search_height_max, test_var):
+    '''
+        :param doi_input_list:      input list of doi from UI
+        :type doi_input_list:       List[String]
+
+        :param search_depth_max:    maximum depth to search for references
+        :type search_depth_max:     int
+
+        :param search_height_max:   maximum height to search for citations
+        :type search_height_max:    int
+
+        :param test_var:            variable to differenciate between test and url call
+        :type test_var:             boolean
+
+        for unit test purposes only
+    '''
+    global nodes, edges
+    nodes = []
+    edges = []
+    return(initialize_nodes_list(doi_input_list, search_depth_max, search_height_max, test_var))
+
+def complete_inner_edges_test(test_nodes, test_edges):
+    '''
+        :param test_nodes:      list of publications from unit test
+        :type test_nodes:       List[Publication]
+
+        :param test_nodes:      list of links from unit test
+        :type test_nodes:       List[List[String,String]]
+
+        for unit test purposes only
+        '''
+        
+    global nodes, edges
+    nodes = test_nodes
+    edges = test_edges
+    complete_inner_edges()
+    return(nodes, edges)
 
 def initialize_nodes_list(doi_input_list, search_depth_max, search_height_max, test_var):
     '''
@@ -54,6 +92,7 @@ def initialize_nodes_list(doi_input_list, search_depth_max, search_height_max, t
 
         # checks if publication already exists in nodes
         not_in_nodes = True #boolean value to check if a node already exists in the set of nodes
+
         for node in nodes: #iterates over every node in the set of nodes
             if (pub.doi_url == node.doi_url): #determines that a node with this doi already is in the set
                 not_in_nodes = False #false --> node will not be created
@@ -96,7 +135,7 @@ def complete_inner_edges():
                         edges.append([node.doi_url,reference.doi_url])
 
 
-def init_graph_construction(doi_input_list, search_depth, search_height, test_var = False):
+def init_graph_construction(doi_input_list, search_depth, search_height, test_var = False, update_var = False, input_nodes = [], input_edges = []):
     '''
         :param doi_input_list:  input list of doi from UI
         :type doi_input_list:   List[String]
@@ -110,6 +149,15 @@ def init_graph_construction(doi_input_list, search_depth, search_height, test_va
         :param test_var:        variable to differenciate between test and url call
         :type test_var:         boolean
 
+        :param test_var:        variable to check if call is from update_graph with known nodes and edges or fresh construction
+        :type test_var:         boolean
+
+        :param input_nodes:     list of publications from update_graph
+        :type input_nodes:      List[Publication]
+
+        :param input_nodes:     list of links from update_graph
+        :type input_nodes:      List[List[String,String]]
+
         main function to start graph generation
     '''
 
@@ -128,8 +176,12 @@ def init_graph_construction(doi_input_list, search_depth, search_height, test_va
     
     # creates empty lists to save nodes and edges
     global nodes, edges
-    nodes = [] 
-    edges = [] 
+    if update_var:
+        nodes = input_nodes
+        edges = input_edges 
+    else:
+        nodes = []
+        edges = []
 
     # initializes nodes/edges from input and gets a list with publication objects for citations and references returned
     references_obj_list, citations_obj_list = initialize_nodes_list(doi_input_list,search_depth, search_height, test_var)
@@ -141,7 +193,11 @@ def init_graph_construction(doi_input_list, search_depth, search_height, test_va
     # adds edges between reference group and citation group of known publications
     complete_inner_edges()
 
-    # calls a skript to save nodes and edges of graph in .json file
-    #output_to_json(nodes, edges, test_var)
+    # garbage collection to delete nodes and edges lists. Needed because python keeps lists after function end till next function call
+    new_nodes = nodes.copy()
+    new_edges = edges.copy()
+    del nodes
+    del edges
+    gc.collect()
 
-    return(nodes,edges)
+    return(new_nodes,new_edges)
diff --git a/verarbeitung/json_text.json b/verarbeitung/json_text.json
index aeb1ae04b7931c7e81e6ea73efcc52fd41dc20b0..183e7647e90c750badbd216f3ec62d9935c79e0c 100644
--- a/verarbeitung/json_text.json
+++ b/verarbeitung/json_text.json
@@ -1 +1 @@
-{"nodes": [{"doi": "https://doi.org/10.1021/acs.jcim.9b00249", "name": "Comparing Molecular Patterns Using the Example of SMARTS: Applications and Filter Collection Analysis", "author": ["Emanuel S. R. Ehmki", "Robert Schmidt", "Farina Ohm", "Matthias Rarey"], "year": "May 24, 2019", "journal": "Journal of Chemical Information and Modeling", "group": "Input", "depth": 0, "citations": 5}, {"doi": "https://doi.org/10.1021/acs.chemrev.1c00107", "name": "Combining Machine Learning and Computational Chemistry for Predictive Insights Into Chemical Systems", "author": ["John A. Keith", "Valentin Vassilev-Galindo", "Bingqing Cheng", "Stefan Chmiela", "Michael Gastegger", "Klaus-Robert M\u00fcller", "Alexandre Tkatchenko"], "year": "July 7, 2021", "journal": "Chem. Rev.", "group": "Citedby", "depth": 1, "citations": 2}, {"doi": "https://doi.org/10.1021/acs.jcim.0c00741", "name": "Disconnected Maximum Common Substructures under Constraints", "author": ["Robert Schmidt", "Florian Krull", "Anna Lina Heinzke", "Matthias Rarey"], "year": "December 16, 2020", "journal": "Journal of Chemical Information and Modeling", "group": "Citedby", "depth": 1, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jmedchem.0c01332", "name": "Evolution of Novartis\u2019 Small Molecule Screening Deck Design", "author": ["Ansgar Schuffenhauer", "Nadine Schneider", "Samuel Hintermann", "Douglas Auld", "Jutta Blank", "Simona Cotesta", "Caroline Engeloch", "Nikolas Fechner", "Christoph Gaul", "Jerome Giovannoni", "Johanna Jansen", "John Joslin", "Philipp Krastel", "Eugen Lounkine", "John Manchester", "Lauren G. Monovich", "Anna Paola Pelliccioli", "Manuel Schwarze", "Michael D. Shultz", "Nikolaus Stiefl", "Daniel K. Baeschlin"], "year": "November 3, 2020", "journal": "Journal of Medicinal Chemistry", "group": "Citedby", "depth": 1, "citations": 8}, {"doi": "https://doi.org/10.1021/acs.jcim.9b00250", "name": "Comparing Molecular Patterns Using the Example of SMARTS: Theory and Algorithms", "author": ["Robert Schmidt", "Emanuel S. R. Ehmki", "Farina Ohm", "Hans-Christian Ehrlich", "Andriy Mashychev", "Matthias Rarey"], "year": "May 23, 2019", "journal": "Journal of Chemical Information and Modeling", "group": "Citedby", "depth": 1, "citations": 12}, {"doi": "https://doi.org/10.1021/acs.jcim.1c00203", "name": "AutoDock Vina 1.2.0: New Docking Methods, Expanded Force Field, and Python Bindings", "author": ["Jerome Eberhardt", "Diogo Santos-Martins", "Andreas F. Tillack", "Stefano Forli"], "year": "July 19, 2021", "journal": "Journal of Chemical Information and Modeling", "group": "Input", "depth": 0, "citations": 1}, {"doi": "https://doi.org/10.1021/acs.jctc.0c01006", "name": "Accelerating AutoDock4 with GPUs and Gradient-Based Local Search", "author": ["Diogo Santos-Martins", "Leonardo Solis-Vasquez", "Andreas F Tillack", "Michel F Sanner", "Andreas Koch", "Stefano Forli"], "year": "January 6, 2021", "journal": "Journal of Chemical Theory and Computation", "group": "Reference", "depth": -1, "citations": 14}, {"doi": "https://doi.org/10.1021/acs.jctc.9b00557", "name": "Docking Flexible Cyclic Peptides with AutoDock CrankPep", "author": ["Yuqi Zhang", "Michel F. Sanner"], "year": "September 11, 2019", "journal": "Journal of Chemical Theory and Computation", "group": "Reference", "depth": -1, "citations": 9}, {"doi": "https://doi.org/10.1021/ci300604z", "name": "Lessons Learned in Empirical Scoring with smina from the CSAR 2011 Benchmarking Exercise", "author": ["David Ryan Koes", "Matthew P. Baumgartner", "Carlos J. Camacho"], "year": "February 4, 2013", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/acs.jctc.5b00834", "name": "Vina-Carb: Improving Glycosidic Angles during Carbohydrate Docking", "author": ["Anita K. Nivedha", "David F. Thieker", "Spandana Makeneni", "Huimin Hu", "Robert J. Woods"], "year": "January 8, 2016", "journal": "Journal of Chemical Theory and Computation", "group": "Reference", "depth": -1, "citations": 48}, {"doi": "https://doi.org/10.1021/ci700036j", "name": "Lennard-Jones Potential and Dummy Atom Settings to Overcome the AUTODOCK Limitation in Treating Flexible Ring Systems", "author": ["Stefano Forli", "Maurizio Botta"], "year": "June 22, 2007", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 32}, {"doi": "https://doi.org/10.1021/ci500209e", "name": "AutoDock4Zn: An Improved AutoDock Force Field for Small-Molecule Docking to Zinc Metalloproteins", "author": ["Diogo Santos-Martins", "Stefano Forli", "Maria Jo\u00e3o Ramos", "Arthur J. Olson"], "year": "June 15, 2014", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/jm2005145", "name": "A Force Field with Discrete Displaceable Waters and Desolvation Entropy for Hydrated Ligand Docking", "author": ["Stefano Forli", "Arthur J. Olson"], "year": "December 9, 2011", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/ci300399w", "name": "Consensus Docking: Improving the Reliability of Docking in a Virtual Screening Context", "author": ["Douglas R. Houston", "Malcolm D. Walkinshaw"], "year": "January 27, 2013", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/jp9723574", "name": "Inhomogeneous Fluid Approach to Solvation Thermodynamics. 1. Theory", "author": ["Themis Lazaridis"], "year": "April 14, 1998", "journal": "Journal of Physical Chemistry B", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/jp972358w", "name": "Inhomogeneous Fluid Approach to Solvation Thermodynamics. 2. Applications to Simple Fluids", "author": ["Themis Lazaridis"], "year": "April 14, 1998", "journal": "Journal of Physical Chemistry B", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/acs.jcim.0c00675", "name": "ZINC20\u2014A Free Ultralarge-Scale Chemical Database for Ligand Discovery", "author": ["John J. Irwin", "Khanh G. Tang", "Jennifer Young", "Chinzorig Dandarchuluun", "Benjamin R. Wong", "Munkhzul Khurelbaatar", "Yurii S. Moroz", "John Mayfield", "Roger A. Sayle"], "year": "October 29, 2020", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 26}, {"doi": "https://doi.org/10.1021/acs.jmedchem.7b01243", "name": "Structural Biology-Inspired Discovery of Novel KRAS\u2013PDE\u03b4 Inhibitors", "author": ["Yan Jiang", "Chunlin Zhuang", "Long Chen", "Junjie Lu", "Guoqiang Dong", "Zhenyuan Miao", "Wannian Zhang", "Jian Li", "Chunquan Sheng"], "year": "September 20, 2017", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -1, "citations": 12}, {"doi": "https://doi.org/10.1021/jm300687e", "name": "Directory of Useful Decoys, Enhanced (DUD-E): Better Ligands and Decoys for Better Benchmarking", "author": ["Michael M. Mysinger", "Michael Carchia", "John. J. Irwin", "Brian K. Shoichet"], "year": "June 20, 2012", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/acs.jcim.8b00312", "name": "Evaluation of AutoDock and AutoDock Vina on the CASF-2013 Benchmark", "author": ["Thomas Gaillard"], "year": "July 10, 2018", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 74}, {"doi": "https://doi.org/10.1021/acs.jcim.9b00778", "name": "Autodock Vina Adopts More Accurate Binding Poses but Autodock4 Forms Better Binding Affinity", "author": ["Nguyen Thanh Nguyen", "Trung Hai Nguyen", "T. Ngoc Han Pham", "Nguyen Truong Huy", "Mai Van Bay", "Minh Quan Pham", "Pham Cam Nam", "Van V. Vu", "Son Tung Ngo"], "year": "December 30, 2019", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 66}, {"doi": "https://doi.org/10.1021/jm0306430", "name": "Glide:\u2009 A New Approach for Rapid, Accurate Docking and Scoring. 1. Method and Assessment of Docking Accuracy", "author": ["Richard A. Friesner", "Jay L. Banks", "Robert B. Murphy", "Thomas A. Halgren", "Jasna J. Klicic", "Daniel T. Mainz", "Matthew P. Repasky", "Eric H. Knoll", "Mee Shelley", "Jason K. Perry", "David E. Shaw", "Perry Francis", "Peter S. Shenkin"], "year": "February 27, 2004", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -1, "citations": 97}, {"doi": "https://doi.org/10.1021/jm020406h", "name": "Surflex:\u2009 Fully Automatic Flexible Molecular Docking Using a Molecular Similarity-Based Search Engine", "author": ["Ajay N. Jain"], "year": "January 21, 2003", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/ci300493w", "name": "ID-Score: A New Empirical Scoring Function Based on a Comprehensive Set of Descriptors Related to Protein\u2013Ligand Interactions", "author": ["Guo-Bo Li", "Ling-Ling Yang", "Wen-Jing Wang", "Lin-Li Li", "Sheng-Yong Yang"], "year": "February 9, 2013", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 99}, {"doi": "https://doi.org/10.1021/jm049314d", "name": "A Knowledge-Based Energy Function for Protein\u2212Ligand, Protein\u2212Protein, and Protein\u2212DNA Complexes", "author": ["Chi Zhang", "Song Liu", "Qianqian Zhu", "Yaoqi Zhou"], "year": "February 16, 2005", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -1, "citations": 100}, {"doi": "https://doi.org/10.1021/acsomega.1c04320", "name": "Novel Anti-Hepatitis B Virus Activity of Euphorbia schimperi and Its Quercetin and Kaempferol Derivatives", "author": ["Mohammad K. Parvez", "Sarfaraz Ahmed", "Mohammed S. Al-Dosari", "Mazin A. S. Abdelwahid", "Ahmed H. Arbab", "Adnan J. Al-Rehaily", "Mai M. Al-Oqail"], "year": "October 21, 2021", "journal": "ACS Omega", "group": "Citedby", "depth": 1, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jpcb.1c08383", "name": "Molecular Simulations of Aqueous Electrolytes: Role of Explicit Inclusion of Charge Transfer into Force Fields", "author": ["Max L. Berkowitz"], "year": "November 22, 2021", "journal": "Journal of Physical Chemistry B", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jpca.1c06264", "name": "Topological Characterization and Graph Entropies of Tessellations of Kekulene Structures: Existence of Isentropic Structures and Applications to Thermochemistry, Nuclear Magnetic Resonance, and Electron Spin Resonance", "author": ["S. Ruth Julie Kavitha", "Jessie Abraham", "Micheal Arockiaraj", "Joseph Jency", "Krishnan Balasubramanian"], "year": "September 1, 2021", "journal": "J. Phys. Chem. A", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acsmedchemlett.1c00251", "name": "The Growing Importance of Chirality in 3D Chemical Space Exploration and Modern Drug Discovery Approaches for Hit-ID", "author": ["Ilaria Proietti Silvestri", "Paul J. J. Colbon"], "year": "July 16, 2021", "journal": "ACS Med. Chem. Lett.", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jmedchem.1c00416", "name": "Target-Based Evaluation of \u201cDrug-Like\u201d Properties and Ligand Efficiencies", "author": ["Paul D. Leeson", "A. Patricia Bento", "Anna Gaulton", "Anne Hersey", "Emma J. Manners", "Chris J. Radoux", "Andrew R. Leach"], "year": "May 13, 2021", "journal": "Journal of Medicinal Chemistry", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jcim.1c00226", "name": "Automatic Identification of Lansoprazole Degradants under Stress Conditions by LC-HRMS with MassChemSite and WebChembase", "author": ["Stefano Bonciarelli", "Jenny Desantis", "Laura Goracci", "Lydia Siragusa", "Ismael Zamora", "Elisabeth Ortega-Carrasco"], "year": "June 1, 2021", "journal": "Journal of Chemical Information and Modeling", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.chemrestox.0c00006", "name": "Computational Approaches to Identify Structural Alerts and Their Applications in Environmental Toxicology and Drug Discovery", "author": ["Hongbin Yang", "Chaofeng Lou", "Weihua Li", "Guixia Liu", "Yun Tang"], "year": "February 24, 2020", "journal": "Chem. Res. Toxicol.", "group": "Citedby", "depth": 2, "citations": 11}, {"doi": "https://doi.org/10.1021/acs.est.9b06379", "name": "Toward a Global Understanding of Chemical Pollution: A First Comprehensive Analysis of National and Regional Chemical Inventories", "author": ["Zhanyun Wang", "Glen W. Walker", "Derek C. G. Muir", "Kakuko Nagatani-Yoshida"], "year": "January 22, 2020", "journal": "Environ. Sci. Technol.", "group": "Citedby", "depth": 2, "citations": 100}, {"doi": "https://doi.org/10.1021/ci049714+", "name": "ZINC \u2212 A Free Database of Commercially Available Compounds for Virtual Screening", "author": ["John J. Irwin", "Brian K. Shoichet"], "year": "December 14, 2004", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 98}, {"doi": "https://doi.org/10.1021/ci3001277", "name": "ZINC: A Free Tool to Discover Chemistry for Biology", "author": ["John J. Irwin", "Teague Sterling", "Michael M. Mysinger", "Erin S. Bolstad", "Ryan G. Coleman"], "year": "May 15, 2012", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 100}, {"doi": "https://doi.org/10.1021/acs.jcim.5b00559", "name": "ZINC 15 \u2013 Ligand Discovery for Everyone", "author": ["Teague Sterling", "John J. Irwin"], "year": "October 19, 2015", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 98}, {"doi": "https://doi.org/10.1021/ci7004498", "name": "Application of Belief Theory to Similarity Data Fusion for Use in Analog Searching and Lead Hopping", "author": ["Steven W. Muchmore", "Derek A. Debe", "James T. Metz", "Scott P. Brown", "Yvonne C. Martin", "Philip J. Hajduk"], "year": "April 17, 2008", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 100}, {"doi": "https://doi.org/10.1021/jm020155c", "name": "Do Structurally Similar Molecules Have Similar Biological Activity?", "author": ["Yvonne C. Martin", "James L. Kofron", "Linda M. Traphagen"], "year": "August 13, 2002", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -2, "citations": 100}, {"doi": "https://doi.org/10.1021/jm9602928", "name": "The Properties of Known Drugs. 1. Molecular Frameworks", "author": ["Guy W. Bemis", "Mark A. Murcko"], "year": "July 19, 1996", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -2, "citations": 100}, {"doi": "https://doi.org/10.1021/ci025599w", "name": "Molecular Shape Diversity of Combinatorial Libraries:\u2009 A Prerequisite for Broad Bioactivity\u2020", "author": ["Wolfgang H. B. Sauer", "Matthias K. 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\ No newline at end of file
diff --git a/verarbeitung/process_main.py b/verarbeitung/process_main.py
index 4e0678386b6da3ee18d4a0f7b0c271f3167c93fd..db17e1f5694fb87e805a073c8839054cedc95c47 100644
--- a/verarbeitung/process_main.py
+++ b/verarbeitung/process_main.py
@@ -16,7 +16,7 @@ __status__ = "Production"
 
 import sys  
 from pathlib import Path
-from os import error
+from os import error, path
 
 sys.path.append("../")
 
@@ -42,13 +42,13 @@ def Processing(url_list, search_depth, search_height, json_file = 'json_text.jso
     '''
 
     # updates graph if json file is known in directory otherwise starts new graph construction
-    try:
-        with open(json_file) as f:
-            nodes, edges = update_graph(url_list, json_file, search_depth, search_height)
-            
-    except IOError:
-        nodes, edges = init_graph_construction(url_list, search_depth, search_height)
+    json_file = Path(json_file)
     
+    if json_file.is_file():
+        nodes, edges = update_graph(url_list, json_file, search_depth, search_height)
+    else:
+        nodes, edges = init_graph_construction(url_list, search_depth, search_height)
+
     # exports graph to given json file name
     output_to_json(nodes, edges, json_file)
     
\ No newline at end of file
diff --git a/verarbeitung/test.json b/verarbeitung/test.json
index e87f9bf7924d1b970578681e663709a0fe398226..45ff7a4c5e3673cdb4d6a90e17a5b7ef579aeae4 100644
--- a/verarbeitung/test.json
+++ b/verarbeitung/test.json
@@ -1 +1 @@
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Olson"], "year": "June 15, 2014", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 2}, {"doi": "https://doi.org/10.1021/jm2005145", "name": "A Force Field with Discrete Displaceable Waters and Desolvation Entropy for Hydrated Ligand Docking", "author": ["Stefano Forli", "Arthur J. Olson"], "year": "December 9, 2011", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -1, "citations": 4}, {"doi": "https://doi.org/10.1021/ci300399w", "name": "Consensus Docking: Improving the Reliability of Docking in a Virtual Screening Context", "author": ["Douglas R. Houston", "Malcolm D. Walkinshaw"], "year": "January 27, 2013", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -1, "citations": 1}, {"doi": "https://doi.org/10.1021/jp9723574", "name": "Inhomogeneous Fluid Approach to Solvation Thermodynamics. 1. 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Parvez", "Sarfaraz Ahmed", "Mohammed S. Al-Dosari", "Mazin A. S. Abdelwahid", "Ahmed H. Arbab", "Adnan J. Al-Rehaily", "Mai M. Al-Oqail"], "year": "October 21, 2021", "journal": "ACS Omega", "group": "Citedby", "depth": 1, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jpcb.1c08383", "name": "Molecular Simulations of Aqueous Electrolytes: Role of Explicit Inclusion of Charge Transfer into Force Fields", "author": ["Max L. Berkowitz"], "year": "November 22, 2021", "journal": "Journal of Physical Chemistry B", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jpca.1c06264", "name": "Topological Characterization and Graph Entropies of Tessellations of Kekulene Structures: Existence of Isentropic Structures and Applications to Thermochemistry, Nuclear Magnetic Resonance, and Electron Spin Resonance", "author": ["S. Ruth Julie Kavitha", "Jessie Abraham", "Micheal Arockiaraj", "Joseph Jency", "Krishnan Balasubramanian"], "year": "September 1, 2021", "journal": "J. Phys. Chem. A", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acsmedchemlett.1c00251", "name": "The Growing Importance of Chirality in 3D Chemical Space Exploration and Modern Drug Discovery Approaches for Hit-ID", "author": ["Ilaria Proietti Silvestri", "Paul J. J. Colbon"], "year": "July 16, 2021", "journal": "ACS Med. Chem. Lett.", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jmedchem.1c00416", "name": "Target-Based Evaluation of \u201cDrug-Like\u201d Properties and Ligand Efficiencies", "author": ["Paul D. Leeson", "A. Patricia Bento", "Anna Gaulton", "Anne Hersey", "Emma J. Manners", "Chris J. Radoux", "Andrew R. Leach"], "year": "May 13, 2021", "journal": "Journal of Medicinal Chemistry", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.jcim.1c00226", "name": "Automatic Identification of Lansoprazole Degradants under Stress Conditions by LC-HRMS with MassChemSite and WebChembase", "author": ["Stefano Bonciarelli", "Jenny Desantis", "Laura Goracci", "Lydia Siragusa", "Ismael Zamora", "Elisabeth Ortega-Carrasco"], "year": "June 1, 2021", "journal": "Journal of Chemical Information and Modeling", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.chemrestox.0c00006", "name": "Computational Approaches to Identify Structural Alerts and Their Applications in Environmental Toxicology and Drug Discovery", "author": ["Hongbin Yang", "Chaofeng Lou", "Weihua Li", "Guixia Liu", "Yun Tang"], "year": "February 24, 2020", "journal": "Chem. Res. Toxicol.", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/acs.est.9b06379", "name": "Toward a Global Understanding of Chemical Pollution: A First Comprehensive Analysis of National and Regional Chemical Inventories", "author": ["Zhanyun Wang", "Glen W. Walker", "Derek C. G. Muir", "Kakuko Nagatani-Yoshida"], "year": "January 22, 2020", "journal": "Environ. Sci. Technol.", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "https://doi.org/10.1021/ci049714+", "name": "ZINC \u2212 A Free Database of Commercially Available Compounds for Virtual Screening", "author": ["John J. Irwin", "Brian K. Shoichet"], "year": "December 14, 2004", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 3}, {"doi": "https://doi.org/10.1021/ci3001277", "name": "ZINC: A Free Tool to Discover Chemistry for Biology", "author": ["John J. Irwin", "Teague Sterling", "Michael M. Mysinger", "Erin S. Bolstad", "Ryan G. Coleman"], "year": "May 15, 2012", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 2}, {"doi": "https://doi.org/10.1021/acs.jcim.5b00559", "name": "ZINC 15 \u2013 Ligand Discovery for Everyone", "author": ["Teague Sterling", "John J. Irwin"], "year": "October 19, 2015", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 1}, {"doi": "https://doi.org/10.1021/ci7004498", "name": "Application of Belief Theory to Similarity Data Fusion for Use in Analog Searching and Lead Hopping", "author": ["Steven W. Muchmore", "Derek A. Debe", "James T. Metz", "Scott P. Brown", "Yvonne C. Martin", "Philip J. Hajduk"], "year": "April 17, 2008", "journal": "Journal of Chemical Information and Modeling", "group": "Reference", "depth": -2, "citations": 1}, {"doi": "https://doi.org/10.1021/jm020155c", "name": "Do Structurally Similar Molecules Have Similar Biological Activity?", "author": ["Yvonne C. Martin", "James L. Kofron", "Linda M. Traphagen"], "year": "August 13, 2002", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -2, "citations": 2}, {"doi": "https://doi.org/10.1021/jm9602928", "name": "The Properties of Known Drugs. 1. Molecular Frameworks", "author": ["Guy W. Bemis", "Mark A. Murcko"], "year": "July 19, 1996", "journal": "Journal of Medicinal Chemistry", "group": "Reference", "depth": -2, "citations": 1}, {"doi": "https://doi.org/10.1021/ci025599w", "name": "Molecular Shape Diversity of Combinatorial Libraries:\u2009 A Prerequisite for Broad Bioactivity\u2020", "author": ["Wolfgang H. B. Sauer", "Matthias K. Schwarz"], "year": "March 14, 2003", "journal": "J. Chem. Inf. Comput. Sci.", "group": "Reference", "depth": -2, "citations": 3}], "links": [{"source": "https://doi.org/10.1021/acs.chemrev.1c00107", "target": "https://doi.org/10.1021/acs.jcim.9b00249"}, {"source": "https://doi.org/10.1021/acs.jcim.0c00741", "target": "https://doi.org/10.1021/acs.jcim.9b00249"}, {"source": "https://doi.org/10.1021/acs.jmedchem.0c01332", "target": "https://doi.org/10.1021/acs.jcim.9b00249"}, {"source": "https://doi.org/10.1021/acs.jcim.9b00250", "target": "https://doi.org/10.1021/acs.jcim.9b00249"}, {"source": "https://doi.org/10.1021/acs.jcim.1c00203", "target": "https://doi.org/10.1021/acs.jctc.0c01006"}, {"source": "https://doi.org/10.1021/acs.jcim.1c00203", "target": "https://doi.org/10.1021/acs.jctc.9b00557"}, {"source": "https://doi.org/10.1021/acs.jcim.1c00203", "target": "https://doi.org/10.1021/ci300604z"}, {"source": "https://doi.org/10.1021/acs.jcim.1c00203", "target": "https://doi.org/10.1021/acs.jctc.5b00834"}, {"source": 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diff --git a/verarbeitung/test/construct_graph_unittest.py b/verarbeitung/test/construct_graph_unittest.py
index 13f201c03a32d13d3364b5bd9af22c3e0efbebdc..4b1dabe2c86bb018278ac81f82bac2a78927d286 100644
--- a/verarbeitung/test/construct_graph_unittest.py
+++ b/verarbeitung/test/construct_graph_unittest.py
@@ -1,22 +1,25 @@
 import unittest
 
-import sys  
-from pathlib import Path
+import sys
+  
+
 sys.path.append("../")
 
-from verarbeitung.construct_new_graph.initialize_graph import init_graph_construction
+from verarbeitung.construct_new_graph.initialize_graph import init_graph_construction, initialize_nodes_list_test, complete_inner_edges_test
+from verarbeitung.construct_new_graph.add_citations_rec import get_cit_type_list
+from verarbeitung.test.input_test import input_test_func
 
 class ConstructionTest(unittest.TestCase):
      maxDiff = None
 
 
      def testCycle(self):
-         nodes, edges = init_graph_construction(['doiz1'],1,1,True)
+         nodes, edges = init_graph_construction(['doiz1'],1,1,True,False)
          doi_nodes = keep_only_dois(nodes)
          self.assertCountEqual(doi_nodes, ['doiz1', 'doiz2'])
          self.assertCountEqual(edges, [['doiz1', 'doiz2'], ['doiz2', 'doiz1']])
 
-         nodes, edges = init_graph_construction(['doiz1'],2,2,True)
+         nodes, edges = init_graph_construction(['doiz1'],2,2,True,False)
          doi_nodes = keep_only_dois(nodes)
          self.assertCountEqual(doi_nodes, ['doiz1', 'doiz2'])
          self.assertCountEqual(edges, [['doiz2', 'doiz1'], ['doiz1', 'doiz2']])
@@ -28,61 +31,114 @@ class ConstructionTest(unittest.TestCase):
     #def testEmptyDepth(self):
 
      def testEmptyDepthHeight(self):
-         nodes, edges = init_graph_construction(['doi1'],0,0,True)
+         nodes, edges = init_graph_construction(['doi1'],0,0,True,False)
          doi_nodes = keep_only_dois(nodes)
          self.assertCountEqual(doi_nodes,['doi1'])
          self.assertCountEqual(edges, [])
 
-         nodes, edges = init_graph_construction(['doi1', 'doi2'],0,0,True)
+         nodes, edges = init_graph_construction(['doi1', 'doi2'],0,0,True,False)
          doi_nodes = keep_only_dois(nodes)
          self.assertCountEqual(doi_nodes, ['doi1','doi2'])
          self.assertCountEqual(edges, [['doi1', 'doi2']])
 
-         nodes, edges = init_graph_construction(['doi1', 'doi2', 'doi3'],0,0,True)
+         nodes, edges = init_graph_construction(['doi1', 'doi2', 'doi3'],0,0,True,False)
          doi_nodes = keep_only_dois(nodes)
          self.assertCountEqual(doi_nodes, ['doi1','doi2', 'doi3'])
          self.assertCountEqual(edges, [['doi3', 'doi1'], ['doi1', 'doi2']])
 
 
      def testInnerEdges(self):
-        nodes, edges = init_graph_construction(['doi_ie1'],1,1,True)
+        nodes, edges = init_graph_construction(['doi_ie1'],1,1,True,False)
         doi_nodes = keep_only_dois(nodes)
         self.assertCountEqual(doi_nodes,['doi_ie1','doi_ie2','doi_ie3'])
         self.assertCountEqual(edges,[['doi_ie1','doi_ie2'],['doi_ie3','doi_ie1'],['doi_ie3','doi_ie2']])
      
      def testRightHeight(self):
-          nodes, edges = init_graph_construction(['doi_h01'],1,0,True)
+          nodes, edges = init_graph_construction(['doi_h01'],0,1,True,False)
           doi_nodes = keep_only_dois(nodes)
           self.assertCountEqual(doi_nodes,['doi_h01'])
           self.assertCountEqual(edges, [])
 
-          nodes, edges = init_graph_construction(['doi_h02'],1,0,True)
+          nodes, edges = init_graph_construction(['doi_h02'],0,1,True,False)
           doi_nodes = keep_only_dois(nodes)
           self.assertCountEqual(doi_nodes,['doi_h02','doi_h1'])
           self.assertCountEqual(edges, [['doi_h1','doi_h02']])
 
-          nodes, edges = init_graph_construction(['doi_h02'],2,0,True)
+          nodes, edges = init_graph_construction(['doi_h02'],0,2,True,False)
           doi_nodes = keep_only_dois(nodes)
           self.assertCountEqual(doi_nodes,['doi_h02','doi_h1','doi_h2'])
           self.assertCountEqual(edges, [['doi_h1','doi_h02'], ['doi_h2','doi_h1']])
 
      def testRightDepth(self):
-          nodes, edges = init_graph_construction(['doi_d01'],0,1,True)
+          nodes, edges = init_graph_construction(['doi_d01'],1,0,True,False)
           doi_nodes = keep_only_dois(nodes)
           self.assertCountEqual(doi_nodes,['doi_d01'])
           self.assertCountEqual(edges, [])
 
-          nodes, edges = init_graph_construction(['doi_d02'],0,1,True)
+          nodes, edges = init_graph_construction(['doi_d02'],1,0,True,False)
           doi_nodes = keep_only_dois(nodes)
           self.assertCountEqual(doi_nodes,['doi_d02','doi_d1'])
           self.assertCountEqual(edges, [['doi_d02','doi_d1']])
 
-          nodes, edges = init_graph_construction(['doi_d02'],0,2,True)
+          nodes, edges = init_graph_construction(['doi_d02'],2,0,True,False)
           doi_nodes = keep_only_dois(nodes)
           self.assertCountEqual(doi_nodes,['doi_d02','doi_d1','doi_d2'])
           self.assertCountEqual(edges, [['doi_d02','doi_d1'], ['doi_d1','doi_d2']])
 
 
+     ## Ab hier die Tests für die einzelnen Funktionen ##
+
+     # initialize_graph.py:
+
+     def test_initialize_nodes_list(self):
+          references_pub_obj_list, citations_pub_obj_list = initialize_nodes_list_test(['doi_lg_1_i','doi_lg_2_i'], 0, 0, True)
+          doi_references = keep_only_dois(references_pub_obj_list)
+          doi_citations = keep_only_dois(citations_pub_obj_list)
+          self.assertCountEqual(doi_references, [])
+          self.assertCountEqual(doi_citations, [])
+
+          references_pub_obj_list, citations_pub_obj_list = initialize_nodes_list_test(['doi_lg_1_i','doi_lg_2_i'], 1, 1, True)
+          doi_references = keep_only_dois(references_pub_obj_list)
+          doi_citations = keep_only_dois(citations_pub_obj_list)
+          self.assertCountEqual(doi_references, ['doi_lg_1_d11','doi_lg_1_d12','doi_lg_2_d11','doi_lg_2_d12'])
+          self.assertCountEqual(doi_citations, ['doi_lg_1_h11','doi_lg_1_h12','doi_cg_i','doi_lg_2_h11','doi_lg_2_h12'])
+
+     def test_complete_inner_edges(self):
+          pub_lg_1_i = input_test_func('doi_lg_1_i')
+          pub_lg_1_i.group = 0
+          pub_lg_1_h_12 = input_test_func('doi_lg_1_h12')
+          pub_lg_1_h_12.group = 1
+          pub_lg_1_d_12 = input_test_func('doi_lg_1_d12')
+          pub_lg_1_d_12.group = -1
+          nodes = [pub_lg_1_i, pub_lg_1_h_12, pub_lg_1_d_12]
+          edges = [['doi_lg_1_i','doi_lg_1_d12'],['doi_lg_1_h12','doi_lg_1_i']]
+          processed_nodes, processed_edges = complete_inner_edges_test(nodes, edges)
+          self.assertCountEqual(processed_nodes, [pub_lg_1_i, pub_lg_1_h_12, pub_lg_1_d_12])
+          self.assertCountEqual(processed_edges, [['doi_lg_1_i','doi_lg_1_d12'],['doi_lg_1_h12','doi_lg_1_i'],['doi_lg_1_h12','doi_lg_1_d12']])
+
+     #    add_citations_rec.py:
+
+     def test_get_type_list(self):
+          pub_lg_1_i = input_test_func('doi_lg_1_i')
+          pub_lg_1_i.group = 0
+          self.assertEqual(get_cit_type_list(pub_lg_1_i, "Hallo"), ValueError)
+          
+          pub_lg_1_h_12 = input_test_func('doi_lg_1_h12')
+          pub_lg_1_h_12.group = 1
+          pub_lg_1_h_12_refs = get_cit_type_list(pub_lg_1_h_12, "Reference")
+          pub_lg_1_h_12_cits = get_cit_type_list(pub_lg_1_h_12, "Citation")
+          self.assertCountEqual(keep_only_dois(pub_lg_1_h_12_refs), keep_only_dois(pub_lg_1_h_12.references))
+          self.assertCountEqual(keep_only_dois(pub_lg_1_h_12_cits), keep_only_dois(pub_lg_1_h_12.citations))
+          
+          pub_lg_1_d_12 = input_test_func('doi_lg_1_d12')
+          pub_lg_1_d_12.group = -1
+          pub_lg_1_d_12_refs = get_cit_type_list(pub_lg_1_d_12, "Reference")
+          pub_lg_1_d_12_cits = get_cit_type_list(pub_lg_1_d_12, "Citation")
+          self.assertCountEqual(keep_only_dois(pub_lg_1_d_12_refs), keep_only_dois(pub_lg_1_d_12.references))
+          self.assertCountEqual(keep_only_dois(pub_lg_1_d_12_cits), keep_only_dois(pub_lg_1_d_12.citations))
+
+     def test_create_graph_structure_citations(self):
+          print("Hallo")
 
 
 def keep_only_dois(nodes):
diff --git a/verarbeitung/test/update_graph_unittest.py b/verarbeitung/test/update_graph_unittest.py
index cf8261af6307585aa641c8a9c388e00ad6c7cadd..e7d453364e1e651bdb0f39a0c105dad0de88f3f8 100644
--- a/verarbeitung/test/update_graph_unittest.py
+++ b/verarbeitung/test/update_graph_unittest.py
@@ -20,17 +20,17 @@ class UpdatingTest(unittest.TestCase):
      #      self.assertCountEqual(nodes_old,nodes_new)
      #      self.assertCountEqual(edges_old, edges_new)
 
-     # def test_deleted_input_dois(self):
-     #      nodes_old_single, edges_old_single = init_graph_construction(['doi_lg_1_i'],2,2,True)
-     #      nodes_old_both, edges_old_both = init_graph_construction(['doi_lg_1_i','doi_lg_2_i'],2,2,True)
-     #      output_to_json(nodes_old_both, edges_old_both, test_var=True)
-     #      nodes_new_single, edges_new_single = update_graph(['doi_lg_1_i'], 'test_output.json', 2, 2, True)
-     #      self.assertCountEqual(nodes_old_single,nodes_new_single)
-     #      self.assertCountEqual(edges_old_single, edges_new_single)
-
-     #      nodes_old_single, edges_old_single = init_graph_construction(['doi_cg_i'],3,3,True)
-     #      nodes_old_two, edges_old_two = init_graph_construction(['doi_lg_1_i','doi_cg_i'],3,3,True)
-     #      nodes_old_three, edges_old_three = init_graph_construction(['doi_lg_1_i','doi_lg_2_i','doi_cg_i'],3,3,True)
+     def test_deleted_input_dois(self):
+          nodes_old_single, edges_old_single = init_graph_construction(['doi_lg_1_i'],2,2,True)
+          nodes_old_both, edges_old_both = init_graph_construction(['doi_lg_1_i','doi_lg_2_i'],2,2,True)
+          output_to_json(nodes_old_both, edges_old_both, test_var=True)
+          nodes_new_single, edges_new_single = update_graph(['doi_lg_1_i'], 'test_output.json', 2, 2, True)
+          self.assertCountEqual(nodes_old_single,nodes_new_single)
+          self.assertCountEqual(edges_old_single, edges_new_single)
+
+          nodes_old_single, edges_old_single = init_graph_construction(['doi_cg_i'],3,3,True)
+          nodes_old_two, edges_old_two = init_graph_construction(['doi_lg_1_i','doi_cg_i'],3,3,True)
+          nodes_old_three, edges_old_three = init_graph_construction(['doi_lg_1_i','doi_lg_2_i','doi_cg_i'],3,3,True)
 
      def test_new_height(self):
           nodes_height_0, edges_height_0 = init_graph_construction(['doi_lg_1_i'],2,0,True)
diff --git a/verarbeitung/test_output.json b/verarbeitung/test_output.json
index 840e19dbb925319d75057380b5dbf2c1176e139a..50d6e78c1960661d4425343dfe7605eeb35d6746 100644
--- a/verarbeitung/test_output.json
+++ b/verarbeitung/test_output.json
@@ -1 +1 @@
-{"nodes": [{"doi": "doi_lg_1_i", "name": "title_lg_1_i", "author": ["contributor_lg_1_i"], "year": "date_lg_1_i", "journal": "journal_lg_1_i", "group": "Input", "depth": 0, "citations": 2}, {"doi": "doi_lg_1_d11", "name": "title_lg_1_d11", "author": ["contributor_lg_1_d11"], "year": "date_lg_1_d11", "journal": "journal_lg_1_d11", "group": "Reference", "depth": -1, "citations": 1}, {"doi": "doi_lg_1_d12", "name": "title_lg_1_d12", "author": ["contributor_lg_1_d12"], "year": "date_lg_1_d12", "journal": "journal_lg_1_d12", "group": "Reference", "depth": -1, "citations": 2}, {"doi": "doi_lg_1_h11", "name": "title_lg_1_h11", "author": ["contributor_lg_1_h11"], "year": "date_lg_1_h11", "journal": "journal_lg_1_h11", "group": "Citedby", "depth": 1, "citations": 2}, {"doi": "doi_lg_1_h12", "name": "title_lg_1_h12", "author": ["contributor_lg_1_h12"], "year": "date_lg_1_h12", "journal": "journal_lg_1_h12", "group": "Citedby", "depth": 1, "citations": 2}, {"doi": "doi_lg_2_i", "name": "title_lg_2_i", "author": ["contributor_lg_2_i"], "year": "date_lg_2_i", "journal": "journal_lg_2_i", "group": "Input", "depth": 0, "citations": 4}, {"doi": "doi_lg_2_d11", "name": "title_lg_2_d11", "author": ["contributor_lg_2_d11"], "year": "date_lg_2_d11", "journal": "journal_lg_2_d11", "group": "Reference", "depth": -1, "citations": 1}, {"doi": "doi_lg_2_d12", "name": "title_lg_2_d12", "author": ["contributor_lg_2_d12"], "year": "date_lg_2_d12", "journal": "journal_lg_2_d12", "group": "Reference", "depth": -1, "citations": 2}, {"doi": "doi_lg_2_h11", "name": "title_lg_2_h11", "author": ["contributor_lg_2_h11"], "year": "date_lg_2_h11", "journal": "journal_lg_2_h11", "group": "Citedby", "depth": 1, "citations": 2}, {"doi": "doi_lg_2_h12", "name": "title_lg_2_h12", "author": ["contributor_lg_2_h12"], "year": "date_lg_2_h12", "journal": "journal_lg_2_h12", "group": "Citedby", "depth": 1, "citations": 2}, {"doi": "doi_cg_i", "name": "title_cg_i", "author": ["contributor_cg_i"], "year": "date_cg_i", "journal": "journal_cg_i", "group": "Citedby", "depth": 1, "citations": 3}, {"doi": "doi_lg_1_h21", "name": "title_lg_1_h21", "author": ["contributor_lg_1_h21"], "year": "date_lg_1_h21", "journal": "journal_lg_1_h21", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "doi_lg_1_h22", "name": "title_lg_1_h22", "author": ["contributor_lg_1_h22"], "year": "date_lg_1_h22", "journal": "journal_lg_1_h22", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "doi_lg_1_h23", "name": "title_lg_1_h23", "author": ["contributor_lg_1_h23"], "year": "date_lg_1_h23", "journal": "journal_lg_1_h23", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "doi_lg_2_h21", "name": "title_lg_2_h21", "author": ["contributor_lg_2_h21"], "year": "date_lg_2_h21", "journal": "journal_lg_2_h21", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "doi_lg_2_h22", "name": "title_lg_2_h22", "author": ["contributor_lg_2_h22"], "year": "date_lg_2_h22", "journal": "journal_lg_2_h22", "group": "Citedby", "depth": 2, "citations": 0}, {"doi": "doi_lg_2_h23", "name": "title_lg_2_h23", "author": ["contributor_lg_2_h23"], "year": "date_lg_2_h23", "journal": "journal_lg_2_h23", "group": "Citedby", "depth": 2, "citations": 1}, {"doi": "doi_lg_2_h24", "name": "title_lg_2_h24", "author": ["contributor_lg_2_h24"], "year": "date_lg_2_h24", "journal": "journal_lg_2_h24", "group": "Citedby", "depth": 2, "citations": 1}, {"doi": "doi_cg_h11", "name": "title_cg_h11", "author": ["contributor_cg_h11"], "year": "date_cg_h11", "journal": "journal_cg_h11", "group": "Citedby", "depth": 2, "citations": 2}, {"doi": "doi_lg_1_d21", "name": "title_lg_1_d21", "author": ["contributor_lg_1_d21"], "year": "date_lg_1_d21", "journal": "journal_lg_1_d21", "group": "Reference", "depth": -2, "citations": 2}, {"doi": "doi_lg_1_d22", "name": "title_lg_1_d22", "author": ["contributor_lg_1_d22"], "year": "date_lg_1_d22", "journal": "journal_lg_1_d22", "group": "Reference", "depth": -2, "citations": 2}, {"doi": "doi_lg_1_d23", "name": "title_lg_1_d23", "author": ["contributor_lg_1_d23"], "year": "date_lg_1_d23", "journal": "journal_lg_1_d23", "group": "Reference", "depth": -2, "citations": 2}, {"doi": "doi_lg_2_d21", "name": "title_lg_2_d21", "author": ["contributor_lg_2_d21"], "year": "date_lg_2_d21", "journal": "journal_lg_2_d21", "group": "Reference", "depth": -2, "citations": 1}, {"doi": "doi_lg_2_d22", "name": "title_lg_2_d22", "author": ["contributor_lg_2_d22"], "year": "date_lg_2_d22", "journal": "journal_lg_2_d22", "group": "Reference", "depth": -2, "citations": 1}, {"doi": "doi_lg_2_d23", "name": "title_lg_2_d23", "author": ["contributor_lg_2_d23"], "year": "date_lg_2_d23", "journal": "journal_lg_2_d23", "group": "Reference", "depth": -2, "citations": 1}], "links": [{"source": "doi_lg_1_i", "target": "doi_lg_1_d11"}, {"source": "doi_lg_1_i", "target": "doi_lg_1_d12"}, {"source": "doi_lg_1_h11", "target": "doi_lg_1_i"}, {"source": "doi_lg_1_h12", "target": "doi_lg_1_i"}, {"source": "doi_lg_2_i", "target": "doi_lg_2_d11"}, {"source": "doi_lg_2_i", "target": "doi_lg_2_d12"}, {"source": "doi_lg_2_h11", "target": "doi_lg_2_i"}, {"source": "doi_lg_2_h12", "target": "doi_lg_2_i"}, {"source": "doi_cg_i", "target": "doi_lg_2_i"}, {"source": "doi_lg_1_h21", "target": "doi_lg_1_h11"}, {"source": "doi_lg_1_h22", "target": "doi_lg_1_h11"}, {"source": "doi_lg_1_h22", "target": "doi_lg_1_h12"}, {"source": "doi_lg_1_h23", "target": "doi_lg_1_h12"}, {"source": "doi_lg_2_h21", "target": "doi_lg_2_h11"}, {"source": "doi_lg_2_h22", "target": "doi_lg_2_h11"}, {"source": "doi_lg_2_h23", "target": "doi_lg_2_h12"}, {"source": "doi_lg_2_h24", "target": "doi_lg_2_h12"}, {"source": "doi_lg_2_h24", "target": "doi_lg_2_h23"}, {"source": "doi_lg_2_h23", "target": "doi_lg_2_h24"}, {"source": "doi_lg_1_h23", "target": "doi_cg_i"}, {"source": "doi_cg_h11", "target": "doi_cg_i"}, {"source": "doi_lg_2_h11", "target": "doi_cg_i"}, {"source": "doi_lg_1_d11", "target": "doi_lg_1_d21"}, {"source": "doi_lg_1_d11", "target": "doi_lg_1_d22"}, {"source": "doi_lg_1_d21", "target": "doi_lg_1_d22"}, {"source": "doi_lg_1_d22", "target": "doi_lg_1_d21"}, {"source": "doi_lg_1_d12", "target": "doi_lg_1_d23"}, {"source": "doi_lg_2_d11", "target": "doi_lg_2_i"}, {"source": "doi_lg_2_d11", "target": "doi_lg_2_d21"}, {"source": "doi_lg_2_d12", "target": "doi_lg_2_d22"}, {"source": "doi_lg_2_d12", "target": "doi_lg_2_d23"}, {"source": "doi_lg_1_h12", "target": "doi_lg_1_d12"}, {"source": "doi_lg_1_h11", "target": "doi_lg_1_h12"}, {"source": "doi_lg_2_h24", "target": "doi_lg_2_d12"}]}
\ No newline at end of file
+{"nodes": [{"doi": "doi_h02", "name": "title_h02", "author": ["contributor_h02"], "year": "date_h02", "journal": "journal_h02", "group": "Input", "depth": 0, "citations": 1}, {"doi": "doi_h1", "name": "title_h1", "author": ["contributor_h1"], "year": "date_h1", "journal": "journal_h1", "group": "Citedby", "depth": 1, "citations": 1}, {"doi": "doi_h2", "name": "title_h2", "author": ["contributor_h2"], "year": "date_h2", "journal": "journal_h2", "group": "Citedby", "depth": 2, "citations": 1}], "links": [{"source": "doi_h1", "target": "doi_h02"}, {"source": "doi_h2", "target": "doi_h1"}]}
\ No newline at end of file
diff --git a/verarbeitung/update_graph/connect_new_input.py b/verarbeitung/update_graph/connect_new_input.py
index 3f11e591db737bd11f2a261213973a2bf297ed1c..35603414f4d22d0612e5dd02b73498261d458a88 100644
--- a/verarbeitung/update_graph/connect_new_input.py
+++ b/verarbeitung/update_graph/connect_new_input.py
@@ -16,69 +16,138 @@ __status__ = "Production"
 import sys  
 from pathlib import Path
 from os import error
+
 sys.path.append("../")
 
-from .import_from_json import input_from_json
-from verarbeitung.construct_new_graph.initialize_graph import initialize_nodes_list, complete_inner_edges
-from verarbeitung.construct_new_graph.add_citations_rec import add_citations
-from verarbeitung.construct_new_graph.export_to_json import output_to_json
+from verarbeitung.construct_new_graph.initialize_graph import init_graph_construction
+from verarbeitung.construct_new_graph.add_citations_rec import add_citations, get_cit_type_list, create_global_lists_cit
+
 
-def connect_old_and_new_input(json_file, new_doi_list, search_depth, search_height, test_var = False):
+def find_furthermost_citations(node, old_search_depth, cit_type):
     '''
-        :param json_file:       json file with old graph
-        :type json_file:        json file
+        :param node:                node which is known but not from input group
+        :type node:                 Publication
 
-        :param new_doi_list:    additional dois which has to be connected to the old graph
-        :type new_doi_list:     list of strings
+        :param old_search_depth:    depth to search for references from old construction call
+        :type old_search_depth:     int
 
-        :param search_depth:    depth to search for references
-        :type search_depth:     int
+        :param cit_type:            determines whether the function call is for a reference or citation
+        :type cit_type:             String
 
-        :param search_height:   height to search for citations
-        :type search_height:    int
+        function to find the furthermost citation/reference for given node which is from the same group
+    '''
+    citations_saved = get_cit_type_list(node, cit_type)
+
+    # group of node and old search depth/height determines how often the loop needs to be repeated
+    for depth in range(old_search_depth - abs(node.group)):
+        new_citations = []
+        for citation in citations_saved:
+            for cit_node in nodes:
+                if citation.doi_url == cit_node.doi_url:
+                    for new_cit in get_cit_type_list(cit_node, cit_type):
+                        for new_cit_node in nodes:
+                            if new_cit.doi_url == new_cit_node.doi_url:
+                                new_cit_node.group -= node.group
+                                new_citations.append(new_cit_node)
+        citations_saved = new_citations
+
+    # returns the references/citations which needs to be processed to complete contruction
+    return(citations_saved)
+
+def complete_changed_group_nodes(inserted_nodes, old_search_depth, old_search_height, new_search_depth, new_search_height, test_var):
+    '''
+        :param inserted_nodes:      list of nodes which are inserted to new input array  
+        :type inserted_nodes:       List[String]
 
-        :param test_var:        variable to differenciate between test and url call
-        :type test_var:         boolean
+        :param old_search_depth:    depth to search for references from old construction call
+        :type old_search_depth:     int
 
-        connetcs the old graph and the new input dois to a complete new graph
-    '''
-    global nodes, edges
-    nodes = []
-    edges = []
+        :param old_search_height:   height to search for citations from old construction call
+        :type old_search_height:    int
 
-    nodes, edges = input_from_json(json_file)
+        :param new_search_depth:    depth to search for references from new construction call
+        :type new_search_depth:     int
 
-    complete_changed_group_nodes(new_doi_list, search_depth, search_height, test_var)
-    
-    # initializes nodes/edges from input and gets a list with publication objects for citations and references returned
-    references_obj_list, citations_obj_list = initialize_nodes_list(new_doi_list,search_depth, search_height, test_var)
+        :param new_search_height:   height to search for citations from new construction call
+        :type new_search_height:    int
 
-    # function calls to begin recursive processing up to max depth/height
-    add_citations(nodes, edges, citations_obj_list, 1, search_height, "Citation", test_var)
-    add_citations(nodes, edges, references_obj_list, 1, search_depth, "Reference", test_var)
+        :param test_var:            variable to differenciate between test and url call
+        :type test_var:             boolean
 
-    # adds edges between reference group and citation group of known publications
-    complete_inner_edges(test_var)
+        completes the references and citations for nodes which were known in non input group
+    '''
+    #changed_group_node_citations = []
+    #changed_group_node_references = []
 
-    # calls a skript to save nodes and edges of graph in .json file
-    output_to_json(nodes,edges, test_var)
+    # saves which nodes were handled because they were known before
+    handled_inserted_nodes = []
+    for node in nodes:
 
-    return(nodes, edges)
+        # moves known reference node to input and completes citations and references for this node
+        if (node.group < 0) and (node.doi_url in inserted_nodes):
+            node_citations = create_global_lists_cit(nodes, edges, node, 1, new_search_height, "Citation", test_var)
+            add_citations(nodes, edges, node_citations, 1, new_search_height, "Citation", test_var)
+            old_max_references = find_furthermost_citations(node, old_search_depth, "Reference")
+            add_citations(nodes, edges, old_max_references, old_search_depth, new_search_depth, "Reference", test_var)
+            node.group = 0
+            handled_inserted_nodes.append(node)
+            
+        # moves known citation node to input and completes citations and references for this node
+        elif (node.group > 0) and (node.doi_url in inserted_nodes):
+            node_references = create_global_lists_cit(nodes, edges, node, 1, new_search_depth, "Reference", test_var)
+            add_citations(nodes, edges, node_references, 1, new_search_depth, "Reference", test_var)
+            old_max_citations = find_furthermost_citations(node, old_search_height, "Citation")
+            add_citations(nodes, edges, old_max_citations, old_search_height, new_search_height, "Citation", test_var)
 
+            node.group = 0
+            handled_inserted_nodes.append(node)
 
-def complete_changed_group_nodes(new_doi_list, search_depth_max, search_height_max, test_var):
+    return(handled_inserted_nodes)
+
+
+def connect_old_and_new_input(input_nodes_list, input_edges_list, inserted_nodes, old_search_depth, old_search_height, new_search_depth, new_search_height, test_var = False):
     '''
-    work in progress
+        :param input_nodes_list:    list of nodes which are processed for new construction call
+        :type input_nodes_list:     List[Publication]
+
+        :param input_edges_list:    list of links between nodes from input_nodes_list.
+        :type input_edges_list:     List[List[String,String]]
+
+        :param inserted_nodes:      list of nodes which are inserted to new input array  
+        :type inserted_nodes:       List[String]
+
+        :param old_search_depth:    depth to search for references from old construction call
+        :type old_search_depth:     int
+
+        :param old_search_height:   height to search for citations from old construction call
+        :type old_search_height:    int
+
+        :param new_search_depth:    depth to search for references from new construction call
+        :type new_search_depth:     int
+
+        :param new_search_height:   height to search for citations from new construction call
+        :type new_search_height:    int
+
+        :param test_var:            variable to differenciate between test and url call
+        :type test_var:             boolean
+
+        completes the references and citations for nodes which were known in non input group
     '''
-    changed_group_node_citations = []
-    changed_group_node_references = []
+    global nodes, edges
+    nodes = input_nodes_list
+    edges = input_edges_list
 
-    for node in nodes:
-        if (node.group < 0) and (node.doi in new_doi_list):
-            node.group = "input"
-            
+    handled_inserted_nodes = complete_changed_group_nodes(inserted_nodes, old_search_depth, old_search_height, new_search_depth, new_search_height, test_var)
 
-        elif (node.group > 0) and (node.doi in new_doi_list):
-            node.group = "input"
+    # copy all nodes from inserted_nodes to new node, if node is not in handled_inserted_nodes
+    not_handled_inserted_nodes = [node for node in inserted_nodes if node not in handled_inserted_nodes]
+    
+    # initializes nodes/edges from input and gets a list with publication objects for citations and references returned
+    #references_obj_list, citations_obj_list = initialize_nodes_list(not_handled_inserted_nodes, new_search_depth, new_search_height, test_var)
+
+    # function calls to begin recursive processing up to max depth/height
+    #add_citations(nodes, edges, citations_obj_list, 1, new_search_height, "Citation", test_var)
+    #add_citations(nodes, edges, references_obj_list, 1, new_search_depth, "Reference", test_var)
 
+    init_graph_construction(not_handled_inserted_nodes, new_search_depth, new_search_height, test_var = test_var, update_var = True, input_nodes = nodes, input_edges = edges)
 
diff --git a/verarbeitung/update_graph/delete_nodes_edges.py b/verarbeitung/update_graph/delete_nodes_edges.py
index 0e4571a15be9628d15a892629688d70ba5f9abf3..53e826e02175131f7f808a24ab613f7d727a44b2 100644
--- a/verarbeitung/update_graph/delete_nodes_edges.py
+++ b/verarbeitung/update_graph/delete_nodes_edges.py
@@ -90,6 +90,7 @@ def delete_nodes_and_edges(input_list, common_nodes, old_edges_list):
                 search_ref_graph_rec(pub)
                 search_cit_graph_rec(pub)
 
-    valid_edges = back_to_valid_edges(old_edges_list, usable_nodes)
-
-    return(usable_nodes, valid_edges)
\ No newline at end of file
+    back_to_valid_edges(old_edges_list, usable_nodes)
+    input_list = usable_nodes.copy()
+    print(input_list)
+    #return(usable_nodes, valid_edges)
diff --git a/verarbeitung/update_graph/update_depth.py b/verarbeitung/update_graph/update_depth.py
index f87fb58b678ca0d16528713168556550fe5365b9..38560c7d70e9eb57b8bf4ec44a1a9516fcde2b51 100644
--- a/verarbeitung/update_graph/update_depth.py
+++ b/verarbeitung/update_graph/update_depth.py
@@ -13,7 +13,7 @@ __status__ = "Production"
 #__version__ = ""
 #__maintainer__ = ""
 
-import sys  
+import sys
 sys.path.append("../../")
 
 from verarbeitung.construct_new_graph.add_citations_rec import add_citations
@@ -72,7 +72,10 @@ def get_old_max_references(old_depth):
     old_max_references = []
     for pub in processed_input_list:
         if (abs(pub.group) == old_depth):
-            old_max_references.append(pub.references)
+            for reference in pub.references:
+                for ref_pub in processed_input_list:
+                    if reference.doi_url == ref_pub.doi_url:
+                        old_max_references.append(ref_pub)
     return(old_max_references)
 
 def get_old_max_citations(old_height):
@@ -85,7 +88,10 @@ def get_old_max_citations(old_height):
     old_max_citations = []
     for pub in processed_input_list:
         if (abs(pub.group) == old_height):
-            old_max_citations.append(pub.citations)
+            for citation in pub.citations:
+                for cit_pub in processed_input_list:
+                    if citation.doi_url == cit_pub.doi_url:
+                        old_max_citations.append(cit_pub)
     return(old_max_citations)
 
 def update_depth(obj_input_list, input_edges, new_depth, new_height, test_var):
@@ -131,7 +137,8 @@ def update_depth(obj_input_list, input_edges, new_depth, new_height, test_var):
     back_to_valid_edges(valid_edges, processed_input_list)
 
     # adds edges between reference group and citation group of known publications
-    complete_inner_edges()
+
+    return(old_depth, old_height)
 
 
     
diff --git a/verarbeitung/update_graph/update_graph.py b/verarbeitung/update_graph/update_graph.py
index 11a9eda9fb2638fdb4fe0a9560439a297e360612..9a91f94623426d09da56d055f27a2c5727af139d 100644
--- a/verarbeitung/update_graph/update_graph.py
+++ b/verarbeitung/update_graph/update_graph.py
@@ -1,4 +1,4 @@
-# -*- coding: utf-8 -*-
+1# -*- coding: utf-8 -*-
 """
 Functions to update a graph representing citations between multiple ACS/Nature journals
 
@@ -85,7 +85,6 @@ def update_graph(new_doi_input_list, json_file, search_depth, search_height, tes
 
     # gets information from previous cunstruction call
     old_obj_input_list , old_edges_list = input_from_json(json_file)
-    print(type(old_edges_list[1]))
 
     # one global list to save the process of removing unneeded publications and one to save valid edges
     global processed_list, valid_edges
@@ -102,11 +101,11 @@ def update_graph(new_doi_input_list, json_file, search_depth, search_height, tes
 
     # deletes publications and edges from node_list if publications can no longer be reached
     if (len(deleted_nodes) > 0):
-        processed_list, valid_edges = delete_nodes_and_edges(processed_list, common_nodes, old_edges_list)
+        delete_nodes_and_edges(processed_list, common_nodes, valid_edges)
     
-    update_depth(processed_list, valid_edges, search_depth, search_height, test_var)
+    old_search_depth, old_search_height = update_depth(processed_list, valid_edges, search_depth, search_height, test_var)
     
     if (len(inserted_nodes) > 0):
-        connect_old_and_new_input(json_file, inserted_nodes, search_depth, search_height, test_var)
+        connect_old_and_new_input(processed_list, valid_edges, inserted_nodes, old_search_depth, old_search_height, search_depth, search_height, test_var)
 
     return(processed_list, valid_edges)