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Ehrich, H. - D., R. Jungclaus, and G. Denker, "Object Roles and Phases", Proc Intern. Workshop on Information Systems - Correctness and Reusability IS-CORE '93, Technical Report, University of Hannover No1 01/93, pp. 114-121, 1993. Abstract
Ehrich, H. - D., K. Alber, G. Stiege, R. Vollmar, and D. Wätjen, "40 Jahre Informatik an der Technischen Universität Braunschweig 1972-2012", Lecture Notes in Informatics, vol. T-6, Bonn, Gesellschaft für Informatik, pp. 188, 2012.
Ehrich, H. - D., and U. Lipeck, "Algebraic domain equations", Theoretical Computer Science, vol. 27, pp. 167-196, 1983. Abstract  Download: 1983TCS-ADE.pdf (951.11 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., "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., 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)
Ehrich, H. - D., and K. Neumann, Datenbanksysteme II, , no. 34: Technische Universität Braunschweig, 1996. Abstract
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., 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)
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., "Proving Implementations Correct - Two Alternative Approaches", IFIP Congress 1980: North-Holland Publ. Comp., 1980. Abstract  Download: 1980IFIP.pdf (384.86 KB)
Ehrich, H. - D., K. Drosten, and M. Gogolla, "Towards an Algebraic Semantics for Database Specification", Proc 2nd IFIP WG 2.6 Working Conf on Database Semantics ``Data and Knowledge'' (DS-2), Albufeira, Portugal, North-Holland, Amsterdam, pp. 119-135, 1988. Abstract  Download: 1988Albufeira.pdf (1.08 MB)
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
Ehrich, H. - D., "Object Specification", Algebraic Foundations of Systems Specification: Springer, pp. 435-465, 1999. Abstract  Download: 1999ObjSpec.pdf (243.61 KB)
Ehrich, H. - D., K. - D. Schewe, and T. H. Tse(eds), "Special Issue Quality Software", Journal of Systems and Software, vol. 79, no. 5: Elsevier B.V., 2006. Abstract  Download:  2006editorialSpecIssueJSS.pdf (241.7 KB)
Ehrich, H. - D., "My ADT Shrine, invited lecture", Selected Papers from WADT 2010, Till Mossakowski and Hans-Jörg Kreowski, eds., Bremen, Springer LNCS 7137, pp. 13-24, 2012. Abstract  Download: 2012LNCS7137WADT10.pdf (498.99 KB)
Ehrich, H. - D., and A. Sernadas, "Algebraic Implementation of Objects over Objects", Proc REX Workshop ``Stepwise Refinement of Distributed Systems: Models, Formalisms, Correctness'': LNCS 430, Springer, Berlin, pp. 239-266, 1990. Abstract  Download: 1990AlgImplem.pdf (479.42 KB)
Ehrich, H. - D., C. Caleiro, A. Sernadas, and G. Denker, "Logics for Specifying Concurrent Information Systems", Logics for Databases and Information Systems: Kluwer Academic Publishers, pp. 167-198, 1998. Abstract  Download: 1998ECSD.pdf (255.81 KB)
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., "Outline of an Algebraic Theory of Structured Objects", Proc. 3rd ICALP, pages 508-530: Edinburgh University Press, 1976. Abstract  Download: 1976EdinBurgh.pdf (966.41 KB)
Ehrich, H. - D., "Key Extensions of Abstract Data Types, Final Algebras, and Database Semantics", Proc Workshop on Category Theory and Computer Programming: Springer, Berlin, LNCS series, pp. 412-433, 1986. Abstract  Download: 1986KeyExtens.pdf (277.5 KB)
Ehrich, H. - D., "BWG-Kommission „Das Kulturelle Erbe im Digitalen Zeitalter“", Jahrbuch der Braunschweigischen Wissenschaftlichen Gesellschaft, vol. 2017_32, pp. 210-212, 06/2018.  Download: 2017_32_Jahrbuch_BWG_Ehrich.pdf (509.2 KB)
Ehrich, H. - D., R. Jungclaus, G. Denker, and A. Sernadas, "Object-Oriented Design of Information Systems: Theoretical Foundations", Advances in Database Systems, Implementations and Applications: Springer Verlag, Wien, CISM Courses and Lectures no. 347, pp. 201-218, 1994. Abstract  Download: 1994CISM1.pdf (266.62 KB)
Ehrich, H. - D., "Bioinformatik - Modellbildung als Herausforderung für die Informatik", Innovation jenseits von Fachgrenzen, M. Bohnet, H. Hopf, K. Lompe, und H. Oberbeck (Herausgeber), Braunschweig, Technische Universität, pp. 37-50, 2004. Abstract  Download: 2004RVBioInf.pdf (699.23 KB)
Ehrich, H. - D., and (ed), "Proceedings", GI – 14. Jahrestagung, Braunschweig, Informatik-Fachberichte Nr. 88, Springer, 1984. Abstract
Ehrich, H. - D., "An Axiomatic Approach to Information Structures", Proc. 5th MFCS: Springer, LNCS 45, pp 277-283, 1976. Abstract  Download: 1976MFCS.pdf (364.21 KB)
Ehrich, H. - D., "Spezifikation konzeptioneller Schemata mit abstrakten Datentypen und Versionen", Proc. GI-Fachgespräch ``Entwurf von Informationssystemen - Methoden und Modelle'', pp. 1-19, 1985. Abstract  Download: 1985Tutzing.pdf (877.62 KB)