@article(AJD2015,
 author       = {S. Aliyu and S.B. Junaidu and A. F. Donfack Kana},
 year         = {2015},
 title        = {A Category Theoretic Model of {RDF} Ontology},
 journal      = {International Journal of Web \& Semantic Technology},
 volume       = {6},
 number       = {3},
 pages        = {41--51},
 doi          = {10.5121/ijwest.2015.6304},
)
@inproceedings(AlqahtaniH18,
 author       = {Abdullah Alqahtani and Reiko Heckel},
 year         = {2018},
 title        = {Model Based Development of Data Integration in Graph Databases Using Triple Graph Grammars},
 booktitle    = {{STAF} 2018},
 series       = {LNCS},
 volume       = {11176},
 publisher    = {Springer},
 pages        = {399--414},
 doi          = {10.1007/978-3-030-04771-9\_29},
)
@article(AndriesE96,
 author       = {Marc Andries and Gregor Engels},
 year         = {1996},
 title        = {A Hybrid Query Language for an Extended Entity-Relationship Model},
 journal      = {J. Vis. Lang. Comput.},
 volume       = {7},
 number       = {3},
 pages        = {321--352},
 doi          = {10.1006/jvlc.1996.0017},
)
@article(AnglesABHRV17,
 author       = {Renzo Angles and Marcelo Arenas and Pablo Barcel{\'{o}} and Aidan Hogan and Juan L. Reutter and Domagoj Vrgoc},
 year         = {2017},
 title        = {Foundations of Modern Query Languages for Graph Databases},
 journal      = {{ACM} Comput. Surv.},
 volume       = {50},
 number       = {5},
 pages        = {68:1--68:40},
 doi          = {10.1145/3104031},
)
@article(BraatzB08,
 author       = {Benjamin Braatz and Christoph Brandt},
 year         = {2008},
 title        = {Graph Transformations for the Resource Description Framework},
 journal      = {{ECEASST}},
 volume       = {10},
 doi          = {10.14279/tuj.eceasst.10.158},
)
@book(Codd90,
 author       = {Edgar F. Codd},
 year         = {1990},
 title        = {The relational Model for Database Management (Version 2 ed.)},
 publisher    = {Addison-Wesley},
)
@inproceedings(CorradiniHHK06,
 author       = {Andrea Corradini and Tobias Heindel and Frank Hermann and Barbara K{\"{o}}nig},
 year         = {2006},
 title        = {Sesqui-Pushout Rewriting},
 booktitle    = {{ICGT} 2006},
 series       = {LNCS},
 volume       = {4178},
 publisher    = {Springer},
 pages        = {30--45},
 doi          = {10.1007/11841883\_4},
)
@inproceedings(CorradiniMREHL97,
 author       = {Andrea Corradini and Ugo Montanari and Francesca Rossi and Hartmut Ehrig and Reiko Heckel and Michael L{\"{o}}we},
 year         = {1997},
 title        = {Algebraic Approaches to Graph Transformation - Part {I:} Basic Concepts and Double Pushout Approach},
 editor       = {Rozenberg},
 pages        = {163--246},
 doi          = {10.1142/3303},
)
@incollection(DBLP:conf/gg/EhrigHKLRWC97,
 author       = {Hartmut Ehrig and Reiko Heckel and Martin Korff and Michael L{\"{o}}we and Leila Ribeiro and Annika Wagner and Andrea Corradini},
 year         = {1997},
 title        = {Algebraic Approaches to Graph Transformation - Part {II:} Single Pushout Approach and Comparison with Double Pushout Approach},
 editor       = {Rozenberg},
 pages        = {247--312},
 doi          = {10.1142/3303},
)
@article(EhrigHP09,
 author       = {Hartmut Ehrig and Frank Hermann and Ulrike Prange},
 year         = {2009},
 title        = {Cospan {DPO} Approach: An Alternative for {DPO} Graph Transformations},
 journal      = {Bulletin of the {EATCS}},
 volume       = {98},
 pages        = {139--149},
 url          = {https://eatcs.org/images/bulletin/beatcs98.pdf},
)
@article(FanLMWW10,
 author       = {Wenfei Fan and Jianzhong Li and Shuai Ma and Hongzhi Wang and Yinghui Wu},
 year         = {2010},
 title        = {Graph Homomorphism Revisited for Graph Matching},
 journal      = {{PVLDB}},
 volume       = {3},
 number       = {1},
 pages        = {1161--1172},
 doi          = {10.14778/1920841.1920986},
)
@article(KKC,
 author       = {Mark Kaminski and Egor V. Kostylev and {Cuenca Grau}, Bernardo},
 year         = {2017},
 title        = {Query Nesting, Assignment, and Aggregation in {SPARQL} 1.1},
 journal      = {{ACM} Trans. Database Syst.},
 volume       = {42},
 number       = {3},
 pages        = {17:1--17:46},
 doi          = {10.1145/3083898},
)
@article(KieselSW95,
 author       = {Norbert Kiesel and Andy Sch{\"{u}}rr and Bernhard Westfechtel},
 year         = {1995},
 title        = {GRAS, a Graph-Oriented (Software) Engineering Database System},
 journal      = {Inf. Syst.},
 volume       = {20},
 number       = {1},
 pages        = {21--51},
 doi          = {10.1016/0306-4379(95)00002-L},
)
@inproceedings(Kostylevetal2015,
 author       = {Egor V. Kostylev and Juan L. Reutter and Mart{\'{\i}}n Ugarte},
 year         = {2015},
 title        = {{CONSTRUCT} Queries in {SPARQL}},
 booktitle    = {18th International Conference on Database Theory, {ICDT} 2015, March 23-27, 2015, Brussels, Belgium},
 pages        = {212--229},
 doi          = {10.4230/LIPIcs.ICDT.2015.212},
)
@article(PerezAG09,
 author       = {Jorge P{\'{e}}rez and Marcelo Arenas and Claudio Guti{\'{e}}rrez},
 year         = {2009},
 title        = {Semantics and complexity of {SPARQL}},
 journal      = {{ACM} Trans. Database Syst.},
 volume       = {34},
 number       = {3},
 pages        = {16:1--16:45},
 doi          = {10.1145/1567274.1567278},
)
@book(Robinson2013,
 author       = {Ian Robinson and Jim Webber and Emil Eifrem},
 year         = {2013},
 title        = {Graph Databases},
 publisher    = {O'Reilly Media, Inc.},
)
@proceedings(handbook1,
 editor       = {Grzegorz Rozenberg},
 year         = {1997},
 title        = {Handbook of Graph Grammars and Computing by Graph Transformations, Volume 1: Foundations},
 publisher    = {World Scientific},
 doi          = {10.1142/3303},
)
@misc(sparql,
 year         = {2013},
 title        = {{SPARQL 1.1 Query Language}},
 howpublished = {W3C Recommendation},
 url          = {https://www.w3.org/TR/sparql11-query/},
)
@misc(rdf,
 year         = {2014},
 title        = {{RDF 1.1 Concepts and Abstract Syntax}},
 howpublished = {W3C Recommendation},
 url          = {https://www.w3.org/TR/rdf11-concepts/},
)
@misc(rdfs,
 year         = {2014},
 title        = {{RDF Schema 1.1}},
 howpublished = {W3C Recommendation},
 url          = {https://www.w3.org/TR/2014/REC-rdf-schema-20140225/},
)