@book{OCL-Amsterdam,
	author = {Steve Cook and Anneke Kleppe and Richard Mitchell and Bernhard Rumpe and Jos Warmer and Alan Wills},
    title = {{The Amsterdam Manifesto on OCL}},
	month = {December},
	year = {1999},
	publisher = {},
	note = {http://www4.informatik.tu-muenchen.de/publ/papers/CKR+99.pdf}
}

@book{OCL-Aachen,
	author = {Achim Brucker and Dan Chiorean and Tony Clark and Birgit Demuth and Martin Gogolla and Dimitri Plotnikov and Bernhard Rumpe and Edward Willink and Burkhart Wolff},
	title = {{Report on the Aachen OCL Meeting}},
	month = {November},
	year = {2013},
	publisher = {},
	note = {http://www4.informatik.tu-muenchen.de/publ/papers/CKR+99.pdf}
}

@book{UML-Executable,
	author = {Stephen Mellor and Marc Balcer},
	title = {{Executable UML: A Foundation for Model-Driven Architecture}},
	year = {2002},
	publisher = {Addison Wesley}
}

@misc{OCL-1.1,
	author = {{Object Management Group}},
	title = {{Object Constraint Language Specification, Version 1.1}},
	month = {August},
	year = {1997},
	note = {https://www.omg.org/cgi-bin/doc?ad/97-08-08.pdf}
}

@misc{OCL-2.0-RFP,
	author = {{Object Management Group}},
	title = {{Request For Proposal UML 2.0 OCL RFP}},
	month = {September},
	year = {2000},
	note = {https://www.omg.org/members/cgi-bin/doc?ad/00-09-03.pdf}
}

@misc{OCL-2.0-draft,
	author = {{Object Management Group}},
	title = {{Response to the UML 2.0 OCL RfP (ad/2000-09-03)}},
	month = {January},
	year = {2003},
	note = {https://www.omg.org/cgi-bin/doc?ad/03-01-07.pdf}
}

@misc{OCL-2.0,
	author = {{Object Management Group}},
	title = {{Object Constraint Language Specification, Version 2.0}},
	month = {May},
	year = {2006},
	note = {https://www.omg.org/spec/OCL/2.0/PDF}
}

@misc{OCL-2.2,
	author = {{Object Management Group}},
	title = {{Object Constraint Language Specification, Version 2.2}},
	month = {February},
	year = {2010},
	note = {https://www.omg.org/spec/OCL/2.2/PDF}
}

@misc{OCL-2.3.1,
	author = {{Object Management Group}},
	title = {{Object Constraint Language Specification, Version 2.3.1}},
	month = {January},
	year = {2012},
	note = {https://www.omg.org/spec/OCL/2.3.1/PDF}
}

@misc{OCL-2.4,
	author = {{Object Management Group}},
	title = {{Object Constraint Language, Version 2.4}},
	note = {formal/2014-02-03},
	month = {February},
	year = {2014},
	note = {https://www.omg.org/spec/OCL/2.4/PDF}
}

@misc{OCL-2.5-RFP,
	author = {{Object Management Group}},
	title = {{Object Constraint Language (OCL) 2.5 Request For Proposal}},
	month = {February},
	year = {2014},
	note = {https://www.omg.org/cgi-bin/doc?ad/14-03-05.pdf}
}

@misc{QVT-1.0,
	author = {{Object Management Group}},
	title = {{Meta Object Facility (MOF) 2.0 Query/View/Transformation Specification, Version 1.0}},
	month = {April},
	year = {2008},
	note = {https://www.omg.org/spec/QVT/1.0/PDF}
}

@misc{QVT-1.3,
	author = {{Object Management Group}},
	title = {{Meta Object Facility (MOF) 2.0 Query/View/Transformation Specification, Version 1.3}},
	note = {formal/2016-06-03},
	month = {June},
	year = {2016}
}

@misc{UML-1.1,
	author = {{Object Management Group}},
	title = {{OMG Unified Modeling Language Specification, Version 1.1}},
	month = {August},
	year = {1997},
	note = {https://www.omg.org/members/cgi-bin/doc?ad/97-08-11.zip}
}

@misc{UML-1.5,
	author = {{Object Management Group}},
	title = {{OMG Unified Modeling Language Specification, Version 1.5}},
	month = {March},
	year = {2003},
	note = {https://www.omg.org/spec/UML/1.5/PDF}
}

@misc{UML-2.0-RFP,
	author = {{Object Management Group}},
	title = {{Request For Proposal UML 2.0 Superstructure RFP}},
	month = {September},
	year = {2000},
	note = {https://www.omg.org/members/cgi-bin/doc?ad/00-09-02.pdf}
}

@misc{UML-2.0-adopted,
	author = {{Object Management Group}},
	title = {{Unified Modeling Language (UML) Specification: Infrastructure, Version 2.0}},
	month = {September},
	year = {2003},
	note = {https://www.omg.org/members/cgi-bin/doc?ptc/03-09-15}
}

@misc{UML-2U,
	author = {{Object Management Group}},
	title = {{Unambiguous UML (2U) 2nd Revised Submission to UML 2 Superstructure RFP}},
	month = {December},
	year = {2002},
	note = {https://www.omg.org/members/cgi-bin/doc?ad/02-12-23.pdf}
}

@misc{UML-U2P,
	author = {{Object Management Group}},
	title = {{2nd revised submission to OMG RFP ad/00-09-02: Unified Modeling Language: Superstructure version 2.0}},
	month = {January},
	year = {2003},
	note = {https://www.omg.org/members/cgi-bin/doc?ad/03-01-02.pdf}
}

@misc{UML-2.0,
	author = {{Object Management Group}},
	title = {{OMG Unified Modeling Language Specification, Version 2.0}},
	month = {July},
	year = {2005},
	note = {https://www.omg.org/spec/UML/2.0}
}

@misc{UML-2.5,
	author = {{Object Management Group}},
	title = {{OMG Unified Modeling Language Specification, Version 2.5}},
	month = {March},
	year = {2015},
	note = {https://www.omg.org/spec/UML/2.5}
}

@misc{Dresden-OCL,
	author = {{Dresden OCL Project}},
	institution = {Technische Universitat Dresden},
	note = {http://www.dresden-ocl.org/index.php/DresdenOCL}
}

@misc{Eclipse-Acceleo,
	author = {{Eclipse Acceleo Project}},
	institution = {Eclipse Foundation},
	note = {https://projects.eclipse.org/projects/\allowbreak modeling.m2t.acceleo}
}

@misc{Eclipse-ATL,
	author = {{Eclipse ATL Project}},
	institution = {Eclipse Foundation},
	note = {https://projects.eclipse.org/projects/\allowbreak modeling.mmt.atl}
}

@misc{Eclipse-Epsilon,
	author = {{Eclipse Epsilon Project}},
	institution = {Eclipse Foundation},
	note = {https://projects.eclipse.org/projects/\allowbreak modeling.epsilon}
}

@misc{Eclipse-OCL,
	author = {{Eclipse OCL Project}},
	institution = {Eclipse Foundation},
	note = {https://projects.eclipse.org/projects/\allowbreak modeling.mdt.ocl}
}

@misc{Eclipse-QVTd,
	author = {{Eclipse QVT Declarative Project}},
	institution = {Eclipse Foundation},
	note = {https://projects.eclipse.org/projects/\allowbreak modeling.mmt.qvtd}
}

@misc{Eclipse-QVTo,
	author = {{Eclipse QVT Operational Mappings Project}},
	institution = {Eclipse Foundation},
	note = {https://projects.eclipse.org/projects/\allowbreak modeling.mmt.qvto}
}

@misc{Eclipse-Xtext,
	author = {{Eclipse Xtext Project}},
	institution = {Eclipse Foundation},
	note = {https://projects.eclipse.org/projects/\allowbreak modeling.tmf.xtext}
}

@misc{USE,
	author = {{USE, The UML-based Specification Environment}},
	institution = {University of Bremen Database Systems Group},
	note = {http://useocl.sourceforge.net/w/index.php/Main\_Page}
}

@misc{YACC,
	author = {{Stephen Johnson}},
	title={Yacc: Yet Another Compiler-Compiler},
	institution = {AT&T Bell Laboratories},
	year = {1975}
}

@inproceedings{TGG-Optimization,
	title={A Catalogue of Optimization Techniques for Triple Graph Grammars},
	author={Erhan Leblebici and Anthony Anjorin and Andy Sch{\"u}rr},
	booktitle={Modellierung},
	year={2014}
}

@inproceedings{Horacio-planning,
author = {Horacio Hoyos Rodriguez and Dimitris Kolovos},
title = {Declarative Model Transformation Execution Planning},
booktitle = {15th International Workshop on OCL and Textual Modeling},
address = {Saint-Malo},
month = {October},
year = {2016}
}

@book{Aho+Sethi+Ullman/86/Compilers,
	added-at = {2009-05-20T01:29:36.000+0200},
	author = {Aho, Alfred V. and Sethi, Ravi and Ullman, Jeff D.},
	biburl = {https://www.bibsonomy.org/bibtex/265c93686232bfafd103e8ecf2aaa3f26/sriram0339},
	description = {First cut database},
	interhash = {069cab756cb575510f247044b597377d},
	intrahash = {65c93686232bfafd103e8ecf2aaa3f26},
	keywords = {imported},
	publisher = {Addison-Wesley Publishing Company},
	timestamp = {2009-05-20T01:29:37.000+0200},
	title = {Compilers: Principles, Techniques and Tools},
	year = 1986
}

@InProceedings{Desai,
	author = {Nisha Desai and Martin Gogolla and Hilken Frank},
	title = "Executing Models by Filmstripping: Enhancing Validation by Filmstrip Templates and Transformation Alternatives",
	 booktitle = "Workshop Executable Modeling, EXE 2017",
	year = 2017
}

@InProceedings{Wilke-Variability,
	author = {Claas Wilke and Michael Thiele and Christian Wende},
	title = "Extending Variability for {OCL} Interpretation",
	booktitle = "OCL 2010: Workshop on OCL and Textual Modelling",
	address = "Models 2010, Oslo",
	year = 2010
}


@inproceedings{Willink-EXE2016,
author = {Edward Willink},
title = {{Local Optimizations in Eclipse QVTc and QVTr using the Micro-Mapping Model of Computation}},
booktitle = {2nd International Workshop on Executable Modeling, Exe 2016},
address = {Saint-Malo},
month = {October},
year = {2016},
note = {http://eclipse.org/mmt/qvt/docs/EXE2016/MicroMappings.pdf}
}

@inproceedings{Willink-Map,
	author = {Edward Willink},
	title = {{An OCL Map Type}},
	booktitle = {19th International Workshop on OCL and Textual Modeling (OCL 2016)},
	address = {Munich},
	month = {September},
	year = {2019},
	note = {http://www.eclipse.org/modeling/mdt/ocl/docs/publications/\allowbreak OCL2019MapType/OCLMapType.pdf}
}

@inproceedings{Willink-OCLforUML,
	author = {Edward Willink},
	title = {{The OCLforUML Profile}},
	booktitle = {EclipseCon Europe 2015},
	address = {Ludwigsburg},
	month = {November},
	year = {2015}
}

@inproceedings{Willink-Opposites,
	author = {Edward Willink},
	title = {{The Importance of Opposites}},
	booktitle = {16th International Workshop on OCL and Textual Modeling (OCL 2016)},
	address = {Saint-Malo},
	month = {October},
	year = {2016},
	note = {http://www.eclipse.org/modeling/mdt/ocl/docs/publications/\allowbreak OCL2016Opposites/Opposites.pdf}
}

@inproceedings{Willink-Safe,
	author = {Edward Willink},
	title = {{Safe Navigation in OCL}},
	booktitle = {15th International Workshop on OCL and Textual Modeling (OCL 2016)},
	address = {Ottawa},
	month = {September},
	year = {2015},
	note = {http://www.eclipse.org/modeling/mdt/ocl/docs/publications/\allowbreak OCL2015SafeNavigation/SafeNavigation.pdf}
}

@inproceedings{Willink-Shadow,
	author = {Edward Willink},
	title = {{Shadow Objects}},
	booktitle = {18th International Workshop on OCL and Textual Modeling (OCL 2016)},
	address = {Copenhagen},
	month = {October},
	year = {2018},
}

@inproceedings{Willink-UMLX,
	author = {Edward Willink},
	title = {{UMLX : A Graphical Transformation Language for MDA}},
	booktitle = {Model Driven Architecture: Foundations and Applications, MDAFA 2003},
	address = {Twente},
	month = {June},
	year = {2003},
	note = {http://eclipse.org/gmt/umlx/doc/MDAFA2003-4/MDAFA2003-4.pdf}
}

@misc{Richters,
	author = {Mark Richters},
	title = {{A Precise Approach to Validating UML Models and OCL Constraints. PhD thesis. Universitaet Bremen. Logos Verlag, Berlin, BISS Monographs, No. 14}},
	year = {2002}	
}

@misc{Sanchez,
	author = {Adolfo Sanchez-Barbudo Herrera},
	title = {{Auto-tooling to Bridge the Concrete and Abstract Syntax of Complex Textual Modeling Languages. EngD thesis. University of York}},
	year = {2017}	
}