Hohenstein, U., &; Engels, G. (1990). Formal Semantics of an Entity-Relationship Query Language. In Proceedings of the 9th International Conference on Entity-Relationship Approach (ER 90), Lausanne, Switzerland (pp. 177–188). ER Institute.
LibreCat: /record/7824

Engels, G. (1990). Elementary Actions on an Extended Entity-Relationship Database. In Proceedings of the workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany) (Vol. 532, pp. 344–362). Berlin/Heidelberg: Springer.http://dx.doi.org/10.1007/BFb0017372 
LibreCat: /record/8259
DOI: http://dx.doi.org/10.1007/BFb0017372

Ebert, J., &; Engels, G. (1989). Konzepte einer Software-Architektur-Beschreibungssprache. In Software-Entwicklung: Konzepte, Erfahrungen, Perspektiven, Fachtagung, 1989, Marburg (Germany) (Vol. 212, pp. 238–250). Berlin/Heidelberg: Springer.
LibreCat: /record/7821

Engels, G. (1989). CADDY-O: Syntaxgestütztes, graphisches Entwerfen konzeptioneller Datenbankschemata. In Tagungsband GI-Fachtagung “Interaktive Schnittstellen für Informationssysteme”, TU Clausthal, Notizen zu Interaktive Systeme (Vol. 18, pp. 1–16).
LibreCat: /record/7822

Engels, G., Hohenstein, U., Hülsmann, K., Löhr-Richter, P., &; Ehrich, H.-D. (1989). CADDY: Computer-Aided Design of Non-Standard Databases. In Proceedings of the International Conference on System Development Environments &; Factories, Berlin, Germany. Berlin: Pitman Publishing.
LibreCat: /record/7823

Engels, G. (1989). Benutzerschnittstelle und Architektur der integrierten Datenbankentwurfsumgebung CADDY (Kurzfassung). TU Braunschweig.
LibreCat: /record/8187

Engels, G., &; Schäfer, W. (1989). Programmentwicklungsumgebungen: Konzepte und Realisierung. Stuttgart: Teubner.
LibreCat: /record/7511

Engels, G., Janning, T., &; Schäfer, W. (1988). A Highly Integrated Tool Set for Program Development Support. In Proceedings of the conference on ACM SIGSMALL/PC symposium on ACTES (SIGSMALL 1988), Cannes (France) (pp. 1–10). New York, NY, USA: ACM Press.http://dx.doi.org/10.1145/62453.62454 
LibreCat: /record/7818
DOI: http://dx.doi.org/10.1145/62453.62454

Engels, G., Hohenstein, U., Neugebauer, L., Saake, G., &; Ehrich, H.-D. (1988). Konzeption einer integrierten Datenbank-Entwurfsumgebung. In Proceedings of DBTA/SI Data Dictionaries und Entwicklungswerkzeuge für Datenbank-Anwendungen, Zürich, Switzerland (pp. 151–157). Verlag der Fachvereine an den Schweiz. Hochschulen und Techniken.
LibreCat: /record/7819

Engels, G., Hohenstein, U., Saake, G., &; Ehrich, H.-D. (1988). Auf dem Weg zu einer integrierten Datenbank-Entwurfsumgebung. In G. Engels, U. Hohenstein, G. Saake, &; H.-D. Ehrich (Eds.), Proceedings of the GI-Workshop on “Sprachspezifische Programmierumgebungen” (pp. 38–51). Darmstadt (Germany): G. Snelting.
LibreCat: /record/7820

Ebert, J., &; Engels, G. (1988). Ein Konzept zur Beschreibung von Software-Architekturen. EWH Koblenz.
LibreCat: /record/8186

Engels, G., Janning, T., &; Schäfer, W. (1988). Die Benutzerschnittstelle einer integrierten Modula-2 Programmentwicklungsumgebung. In Proceedings of GI-Workshop Sprachspezifische Programmierumgebungen, Darmstadt, Germany.
LibreCat: /record/8258

Engels, G., &; Schürr, A. (1987). A Hybrid Interpreter in a Software Development Environment. In Proceedings of the 1st European Software Engineering Conference (ESEC ’87), Strasbourg (France) (Vol. 289, pp. 80–88). Berlin/Heidelberg: Springer.
LibreCat: /record/7816

Engels, G., Nagl, M., &; Schäfer, W. (1987). On the Structure of Structure-Oriented Editors for Different Applications. In Proceedings of the ACM SIGSOFT/SIGPLAN Software Engineering Symposium on Practical Software Development Environments, Palo Alto, USA (Vol. 22, pp. 190–198). ACM SIGPLAN Notices.
LibreCat: /record/7817

Engels, G., Lewerentz, C., &; Schäfer, W. (1987). Graph Grammar Engineering: A Software Specification Method. In Proceedings of the 3rd International Workshop on Graph-Grammars and Their Application to Computer Science, Warrenton, VA (USA) (Vol. 291, pp. 186–201). Berlin/Heidelberg: Springer.https://doi.org/dx.doi.org/10.1007/3-540-18771-5 
LibreCat: /record/8257
DOI: dx.doi.org/10.1007/3-540-18771-5

Engels, G., Lewerentz, C., Nagl, M., &; Schäfer, W. (1986). On the Structure of an Incremental and Integrated Software Development Environment. In Proceedings of the 19th Hawaii International Conference on System Sciences, Hawaii, USA (Vol. 2a, pp. 585–597).
LibreCat: /record/7815

Engels, G., &; Sandbrink, A. (1986). Experiences with a Hybrid-Interpreter Based on Incremental Compilation Techniques. In Proceedings of the Workshop on Compiler Compilers and Incremental Compilation Techniques, Bautzen (Vol. 12, pp. 172–184). Bautzen: Berlin(Ost): Akademie der Wissenschaften der DDR.
LibreCat: /record/8256

Engels, G. (1986). Graphen als zentrale Datenstrukturen in einer Software-Entwicklungsumgebung.
LibreCat: /record/7588

Engels, G., &; Schäfer, W. (1985). Graph Grammar Engineering: A Method Used for the Development of an Integrated Programming Support Environment. In Proceedings of the International Joint Conference on Theory and Practice of Software Development (TAPSOFT 1985), Berlin (Germany) (Vol. 186, pp. 179–193). Berlin/Heidelberg: Springer.
LibreCat: /record/7813

Engels, G., &; Schäfer, W. (1985). The Design of an Adaptive and Portable Programming Support Environment. In Proceedings of the International Computing Symposium, Amsterdam (The Netherlands). Florenz.
LibreCat: /record/7814