Corradini, A., &; Heckel, R. (1995). A Compositional Approach to Structuring and Refinement of Typed Graph Grammars. In Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy) (Vol. 2, pp. 46–55). Elsevier.

Bardohl, B., Bardohl, R., Castro, P., Ehrig, H., Heckel, R., Ribeiro, L.,  Martini, A. (1995). GRAPHIT: Graphical Support and Integration of Formal and Semiformal Methods for Software Specification and Development. In Proceedings of the 3rd German-Brazilian Workshop on Information Technology (1995), Berlin (Germany) (Vol. 26). Forschungszentrum Jülich GmbH.

Engels, G., &; Schürr, A. (1995). Encapsulated Hierarchical Graphs, Graph Types, and Meta Types. In Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy) (pp. 101–109). Amsterdam, The Netherlands: Elsevier.http://dx.doi.org/10.1016/S1571-0661(05)80186-0 

Heckel, R., &; Wagner, A. (1995). Ensuring Consistency of Conditional Graph Grammars - A constructive Approach. In Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy) (Vol. 2, pp. 118–126). Elsevier.http://dx.doi.org/10.1016/S1571-0661(05)80188-4 

Ehrich, H.-D., Engels, G., Paredaens, J., &; Wegner, J. (Eds.). (1994). Fundamentals of Object-Oriented Languages, Systems, and Methods (Vol. 95). Schloss Dagstuhl, Leibniz Center for Informatics.

Cuny, J., Ehrig, H., Engels, G., &; Rozenberg, G. (Eds.). (1994). Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers (Vol. 1073). Berlin/Heidelberg: Springer.http://dx.doi.org/10.1007/3-540-61228-9 

Thoben, W., Appelrath, H.-J., Rettig, J., &; Sauer, S. (1994). Berücksichtigung von Datenschutzaspekten in einem bevölkerungsbezogenen Krebsregister. In Proceedings of the conference on Medizin und Information, Biometrie und Epidemiologie (GMDS 1994), Dresden (Germany) (pp. 88–90). München: MMV Medizin Verlag.

Ebert, J., &; Engels, G. (1994). Structural and Behavioural Views on OMT-Classes. In Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy) (Vol. 858, pp. 142–157). Berlin/Heidelberg: Springer.

Engels, G., &; Kappel, G. (1994). Object-Oriented System Development: Will the New Approach Solve Old Problems? In Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany) (Vol. 3, pp. 434–441). Elsevier.

Engels, G., &; Ehrig, H. (1994). Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective. In Proceedings Colloquium on Graph Transformation and its Application in Computer Science (Vol. B-19). Universitat de les Illes Balears, Departament de Ci.

Ebert, J., &; Engels, G. (1994). Observable or Invocable Behaviour - You Have to Choose. Vakgroep Informatica, Rijksuniversiteit Leiden.

Andries, M., &; Engels, G. (1994). Syntax and Semantics of Hybrid Database Languages. In Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany) (Vol. 776, pp. 19–36). Berlin/Heidelberg: Springer.http://dx.doi.org/10.1007/3-540-57787-4_2 

Engels, G., &; Groenewegen, L. (1994). Specification of coordinated behaviour by SOCCA. In Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France) (pp. 128–151). Berlin/Heidelberg: Springer.http://dx.doi.org/10.1007/3-540-57739-4_19 

Engels, G., &; Löhr, P. (1994). Visual Specification of Complex Database Actions. In Proceedings of the 2nd International East/West Database Workshop, Klagenfurt (Germany) (pp. 303–314). Berlin/Heidelberg: Springer.

Löhr-Richter, P., &; Engels, G. (1994). Visuelles Spezifizieren von komplexen Aktionen auf Datenbankstrukturen. GI-Datenbank Rundbrief, 13, 33–35.

Ebert, J., &; Engels, G. (1994). Design Representation. In Encyclopedia of Software Engineering (pp. 382–394). John Wiley &; Sons, Inc.

Engels, G., &; Groenewegen, L. (1994). SOCCA: Specifications of Coordinated and Cooperative Activities. In Software Process Modelling and Technology (pp. 71–102). Taunton: Research Studies Press.

Engels, G., &; Verrijn-Stuart, A. A. (1993). Integrationsaspekte bei verteilter Software-Entwicklung. In Fortschritt-Berichte VDI (pp. 45–53). VDI Verlag.

Andries, M., &; Engels, G. (1993). A Hybrid Query Language for the Extended Entity Relationship Model. Vakgroep Informatica, Rijksuniversiteit Leiden.

Ehrig, H., &; Engels, G. (1993). Towards a Module Concept for Graph Transformation Systems. Vakgroep Informatica, Rijksuniversiteit Leiden.