1999

Stumme, G. & Wolff, K. E. (1999), Numerical Aspects in the Data Model of Conceptual Information Systems, in Y. Kambayashi; Dik Kun Lee; Ee-Peng Lim; M. K. Mohania & Y. Masunaga, ed., 'Advances in Database Technologies. Proc. Intl. Workshop on Data Warehousing and' , Springer, Heidelberg , pp. 117-128 .
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Stumme, G. (1999), Acquiring Expert Knowledge for the Design of Conceptual Information Systems, in D. Fensel & R. Studer, ed., 'Knowledge Acquisition, Modeling, and Management. Proc. 11th European' , Springer, Heidelberg , pp. 275-290 .
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Stumme, G. (1999), Dual Retrieval in Conceptual Information Systems, in A. Buchmann, ed., 'Datenbanksysteme in Büro, Technik und Wissenschaft. Proc. BTW'99' , pp. 328-342 .
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