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Ehrich, H. - D., "Fundamentals of Object-Oriented Information Systems Specification and Design: The OBLOG/TROLL Approach", Nuclear Instruments and Methods in Physics Research A: Elsevier, Amsterdam, pp. 375-378, 1994. Abstract  Download: 1994CERN.pdf (280.86 KB)
Ehrich, H. - D., and A. Sernadas, "Fundamental Object Concepts and Constructions", Information Systems - Correctness and Reusability: TU Braunschweig, Informatik Bericht 91-03, pp. 1-24, 1991. Abstract
Sernadas, A., H. - D. Ehrich, and J. - F. Costa, "From Processes to Objects", The INESC Journal of Research and Development 1:1, pp. 7-27, 1990. Abstract  Download: 1990INESC.pdf (997.32 KB)
Ehrich, H. - D., A. Sernadas, and C. Sernadas, "From Data Types to Object Types", Journal on Information Processing and Cybernetics EIK, vol. 26, no. 1-2, pp. 33-48, 1990. Abstract  Download: 1990EIK.pdf (875.31 KB)
Ehrich, H. - D., "Extensions and Implementations of Abstract Data Type Specifications", Proc. 7th MFCS: Springer LNCS 64, pages 155–164, 1978. Abstract  Download: 1978MFCS.pdf (217.71 KB)
Neumann, K., F. Lohmann, and H. - D. Ehrich, "An Experimental Geoscientific Database System", Proc1 Int1 Coll1 on Digital Maps in Geosciences, Würzburg 1989: Geologisches Jahrbuch A122, Hannover, pp. 91-100, 1992. Abstract  Download: 1992GeoDBSys.pdf (1013.78 KB)
Denker, G., and H. - D. Ehrich, "An Event-Based Semantics for Transactions", Proc. Intern. Workshop on Information Systems - Correctness and Reusability (IS-CORE'95), Technical Report, Evry, Sept. 1995: Universite d'Evry Val d'Essonne, Laboratoire de Mathematiques et d'Informatique, pp. 57-72, 1995. Abstract
Lohmann, F., K. Neumann, and H. - D. Ehrich, "Entwurf eines Datenbank-Prototyps für geowissenschaftliche Anwendungen", Proc GI/SI-Fachtagung ``Datenbanksysteme in Büro, Technik und Wissenschaft'': Springer, Berlin, 1989, pp. 43-57, 1989. Abstract  Download: 1989BTW.pdf (557.01 KB)
Ehrich, H. - D., "Entwicklung zuverlässiger Informationssysteme", Informatik -- Forschung und Entwicklung, vol. 8, no. 3, pp. 160-161, 1993. Abstract  Download: 1993KorSo2.pdf (91.63 KB)
Conrad, S., G. Denker, M. Gogolla, R. Herzig, N. Vlachantonis, and H. - D. Ehrich, "Entwicklung zuverlässiger Informationssysteme", EMISA Forum, Mitteilungen der GI-Fachgruppe 2.5.2, vol. 2, pp. 25-33, 1995. Abstract  Download: 1995EMISA.pdf (691.75 KB)
Conrad, S., and H. - D. Ehrich, "An Elementary Logic for Object Specification and Verification", Workshop Formale Grundlagen für den Entwurf von Informationssystemen, Tutzing: Technical Report Univ1 Hannover, No1 03/94, pp. 197-206, 1994. Abstract
Ramm, I., and H. - D. Ehrich, "Einführung in das Projekt: Entwurf einer Benutzerschnittstelle für eine graphisch-alphanumerische Datenbank", Nachrichten aus dem Karten- und Vermessungswesen, vol. Reihe I, no. Heft 95, pp. 115-124, 1985. Abstract  Download: 1985Geo.pdf (788.93 KB)
Ehrich, H. - D., "Eine Mathematische Semantik für die Beschreibung von Datenstrukturen", Graphen, Algorithmen, Datenstrukturen: Hanser Appl Comp. Sc. 4, pp 53-64, 1976. Abstract  Download: 1976Graphen2.pdf (716.42 KB)
Ehrich, H. - D., "Ein axiomatischer Ansatz für eine Algebra strukturierter Objekte", Graphensprachen und Algorithmen auf Graphen: Hanser, Appl. Comp. Sc. 1, pages 143–161, 1976. Abstract  Download: 1976Graphen1.pdf (522.3 KB)
Ehrich, H. - D., A. Sernadas, G. Saake, and C. Sernadas, "Distributed Temporal Logic for Concurrent Object Families", Working papers of the International Workshop on Information Systems - Correctness and Reusability: Vrije Universiteit Amsterdam, RapportNr. IR-357, pp. 22-30, 1994. Abstract
Ehrich, H. - D., M. Kollmann, and R. Pinger, "Distributed Model Checking", Proc. FM-TOOLS 2002, pp. 53-58, 2002. Abstract  Download: 2002FMTOOLS.pdf (595.59 KB)
Krone, M., M. Kowsari, P. Hartel, G. Denker, and H. - D. Ehrich, "Developing an Information System Using TROLL: an Application Field Study", Proc. 8th Int. Conf. on Advanced Information Systems Engineering (CAiSE'96): Springer, Berlin, LNCS 1080, pp. 136-159, 1996. Abstract  Download: 1996CAiSE.pdf (438.58 KB)
Ehrich, H. - D., "Datenstrukturen und Q-Systeme - eine Mathematische Studie", Proc. 3. Jahrestagung der GI: Springer, LNCS 1, pp363-371, 1973. Abstract  Download: 1973GIJahrestagung.pdf (834.06 KB)
Ehrich, H. - D., and K. Neumann, Datenbanksysteme II, , no. 34: Technische Universität Braunschweig, 1996. Abstract
Ehrich, H. - D., F. Lohmann, K. Neumann, and I. Ramm, "A Database Language for Scientific Map Data", Construction and Display of Geosientific Maps Derived from Databases (Proc. Int. Coll. Dinkelsbühl 1986): Geologisches Jahrbuch A 104, pp. 139-152, 1988. Abstract  Download: 1988Geo.pdf (905.2 KB)
Gogolla, M., and H. - D. Ehrich, Contributions to: Algebraic System Specification and Development, , Bidoit, M., Kreowski, H.-J., Lescanne, P., Orejas, F. and Sannella, D., editors: Springer, Berlin, LNCS 501, 1991. Abstract
Ehrich, H. - D., G. Denker, and A. Sernadas, "Constructing Systems as Object Communities", Proc Theory and Practice of Software Developmen1 (TAPSOFT'93): Springer, Berlin, LNCS 668, pp. 453-467, 1993. Abstract  Download: 1993TAPSOFT.pdf (320.97 KB)
Ehrich, H. - D., and V. G. Lohberger, "Constructing Specifications of Abstract Data Types by Replacements", Proc. Int. Colloquium on Graph Grammars: Springer LNCS 73, pp 180-191, 1978. Abstract  Download: 1978SpecReplace.pdf (214.4 KB)
Ehrich, H. - D., G. Saake, and A. Sernadas, "Concepts of Object-Orientation", Proc of the 2nd Workshop of ``Informationssysteme und Künstliche Intelligenz: Modellierung'', Ulm (Germany): Springer IF 303, pp. 1-19, 1992. Abstract  Download: 1992ConcObjOr.pdf (208.55 KB)
Pinger, R., and H. - D. Ehrich, "Compositional Checking of Communication among Observers", Fundamental Approaches to Software Engineering (FASE), Part of the Joint European Conferences on Theory and Practice of Software (ETAPS 2001), Genova, vol. LNCS 2029: Springer, pp. 32-44, 2001. Abstract  Download: 2001FASE.pdf (171.57 KB)
Ehrich, H. - D., and R. Pinger, "Checking object systems via multiple observers", International ICSC Congress on Intelligent Systems & Applications (ISA'2000) , vol. 1: International Computer Science Conventions (ICSC), Canada, pp. 242-248, 2000. Abstract  Download: 2000ISA.pdf (112.72 KB)
Ehrich, H. - D., M. Kollmann, and R. Pinger, "Checking Object System Designs Incrementally", Journal of Universal Computer Science, vol. 9, no. 2, pp. 106-119, February, 2003. Abstract  Download: 2003JUCS.pdf (167.55 KB)