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Technical Report
Ehrich, H. - D., G. Engels, J. Paradaens, P. Wegner, and (eds), Fundamentals of Object- Oriented Languages. Dagstuhl Seminar Report Nr. 95 (9434), , Schloss Dagstuhl, IBFI GmbH, 1994.  Download: 1994DagstuhlSeminar9434.pdf (336.72 KB)
Ehrich, H. - D., Y. Feng, D. Kung, and (eds), Object-Oriented Software Development, Dagstuhl Seminar Report 9715, , Schloss Dagstuhl, IBFI GmbH, 1997.  Download: 1997DagstuhlSemina9715.pdf (196.96 KB)
Ryan, M. D., J. - J. C. Meyer, H. - D. Ehrich, and (eds), Objects, Agents, and Features. Dagstuhl Seminar 13081 Report, , Schloss Dagstuhl, IBFI GmbH, 2003.  Download: 2003DagstuhlSeminar03081.pdf (97.64 KB)
Ryan, M. D., J. - J. C. Meyer, H. - D. Ehrich, and (eds), Objects, Agents, and Features. Dagstuhl Seminar 13081 Report, , Schloss Dagstuhl, IBFI GmbH, 2003.  Download: 2003DagstuhlSeminar03081.pdf (97.64 KB)
Ehrich, H. - D., U. Goltz, J. Meseguer, A. Pnueli, and (eds), Speci cation of Distributed Information Systems. Dagstuhl Seminar 00081 Report, , Schloss Dagstuhl, IBFI GmbH, 2000.  Download: 2000DagstuhlSemina00081.pdf (187.18 KB)
Miscellaneous
Ehrich, H. - D., M. Gogolla, and U. W. Lipeck, Algebraische Spezifikation abstrakter Datentypen, : Teubner, Stuttgart, 1989. Abstract
Grau, A., M. Kowsari, and H. - D. Ehrich, "A CASE-Tool Environment for Developing and Validating Conceptual Models (Poster Session)", 9th Conference on Advanced Information Systems Engineering (CAISE'97), Barcelona, June 18-20, 1997. Abstract
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
Stiege, G., H. - D. Ehrich, and W. - T. Balke, Datenbanken und Informationssysteme, , 2012.  Download: 2012IfIS.pdf (2.44 MB)
Loeckx, J., H. - D. Ehrich, and M. Wolf, Specification of abstract data types, : J. Wiley & Sons and B.G.Teubner Publishers, 1996. Abstract
Magazine Article
Gogolla, M., and H. - D. Ehrich, "Algebraic Specifications with Subsorts Using Declarations", EATCS Bulletin, vol. 21, pp. 31-38, 1983. Abstract  Download: 1983EATCSBull.pdf (93.61 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., "Implicit Specification by Algebraic Domain Equations", EATCS Bulletin, vol. 13, pp. 45-51, 1981.  Download: 1981EATCS.pdf (341.1 KB)
Journal Article
Gogolla, M., K. Drosten, U. W. Lipeck, and H. - D. Ehrich, "Algebraic and Operational Semantics of Specifications allowing Exceptions and Errors", Theoretical Computer Science, vol. 34, 1984. Abstract  Download: 1984TCS-ExcErr.pdf (728.49 KB)
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., S. Eckstein, B. Mathiak, A. Kupfer, and C. Täubner, "Bioinformatik - Erkenntnisse aus der Datenflut?", Abhandlungen der Braunschweigischen Wissenschaftlichen Gesellschaft, vol. LVII: J. Cramer Verlag, pp. 9-34, 2007. Abstract  Download: 2007BWG.pdf (491.15 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)
Engels, G., M. Gogolla, U. Hohenstein, K. Hülsmann, P. Löhr-Richter, G. Saake, and H. - D. Ehrich, "Conceptual modelling of database applications using an extended ER model", Data & Knowledge Engineering, North-Holland, vol. 9, no. 2, pp. 157-204, 1992. Abstract  Download: 1992DKE.pdf (883.85 KB)
Bieger, D., H. - D. Ehrich, and O. Wassermann, "Ein ALGOL-Programm zur rechnerischen Trennung nahe benachbarter Ionisationskonstanten nach Britton", Arzneim.-Forsch. (Drug Res.), vol. 18: Editio Cantor KG, pp. 373-377 , 1968. Abstract  Download: 1968DrugResearch.pdf (450.68 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)
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)
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., "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., "Grundlagen einer Theorie der Datenstrukturen und Zugriffssysteme. Teil I: Datenstrukturen und Schemata", Acta Informatica, vol. 4: Springer, pp. 201-211, 1975. Abstract  Download: 1975Acta1.pdf (409.11 KB)
Ehrich, H. - D., "Grundlagen einer Theorie der Datenstrukturen und Zugriffssysteme. Teil II: Zugriffssysteme", Acta Informatica, vol. 4: Springer, pp. 299-310, 1975. Abstract  Download: 1975Acta2.pdf (425.6 KB)
Drosten, K., M. Gogolla, H. - D. Ehrich, and U. Lipeck, "A Hierarchical Approach to an Operational Semantics for Conditional Algebraic Specifications", Berichte der Abteilung Informatik, vol. 144: Universität Dortmund, 1982. Abstract
Hartel, P., G. Denker, M. Kowsari, M. Krone, and H. - D. Ehrich, "Information systems modelling with TROLL formal methods at work", Information Systems, vol. 22, no. 2-3, pp. 79-99, 1997. Abstract  Download: 1997InfSysAtWork.pdf (846.73 KB)
Ehrich, H. - D., "Informationssysteme - Hilfe für Dienstleister aller Art", Carolo-Wilhelmina Mitteilungen, vol. Band 35 (Sonderheft "10 Jahre Simultan-Studiengänge"), pp. 46-47, 2000. Abstract  Download: 2000CWM.pdf (461.8 KB)
Ehrich, H. - D., "Konzeptionelle Modellierung von Informationssystemen", Carolo-Wilhelmina Mitteilungen, vol. Band 34 (Schwerpunktheft Informatik), pp. 16-19, 1999. Abstract  Download: 1999CWM.pdf (515.72 KB)
Ehrich, H. - D., "Minimale und rn-minimale Variablenmengen für partielle Boole'sche Funktionen", Acta Informatica, vol. 2: Springer, pp. 172-179, 1973. Abstract  Download: 1973Acta.pdf (273.93 KB)
Ehrich, H. - D., "A Note on State Minimization of a Special Class of lncomplete Sequential Machines", IEEE Transactions on Computers, vol. C-21, No. 5: The Institute of Electrical and Electronics Engineers, Inc., pp. 500-502, 1972. Abstract  Download: 1972IEEE-C-21.pdf (144.06 KB)
Ehrich, H. - D., and J. W. Lipski, "On the Storage Space Requirement of Consecutive Retrieval with Redundancy", Information Processing Letters, vol. 4 (4), pp. 101-104, 1976.  Download: 1976ConsecRetrieval.pdf (168.16 KB)
Ehrich, H. - D., "On the Theory of Specification, Implementation and Parameterization of Abstract Data Types", Journal of the ACM, vol. 29, pp. 206-227, 1982. Abstract  Download: 1982JACM.pdf (449.29 KB)
Engels, G., U. Pletat, and H. - D. Ehrich, "An operational semantics for specification of abstract data types with error handling", Acta Informatica, vol. 19: Springer, pp. 235-253, 1983. Abstract  Download: 1983Acta.pdf (667.18 KB)