Stumme, Gerd. Acquiring Expert Knowledge for the Design of Conceptual Information Systems. Knowledge Acquisition, Modeling, and Management. Proc. 11th European. editor(s) Fensel, D. and Studer, R.. LNAI, (1621) 275-290, Springer, Heidelberg, Year 1999.

Stumme, Gerd. Distributive Concept Exploration - A Knowledge Acquisition Tool in Formal Concept Analysis. KI-98: Advances in Artificial Intelligence. Proc. 22. Jahrestagung. editor(s) Herzog, O. and Günter, A.. LNAI, (1504) 117-128, Springer, Heidelberg, Year 1998.

Stumme, Gerd. Concept Exploration - A Tool for Creating and Exploring Conceptual Hierarchies. Conceptual Structures: Fulfilling Peirce's Dream. Proc. ICCS'97. editor(s) Lukose, D. and Delugach, H. and Keeler, M. and Searle, L. and Sowa, J. F.. LNAI, (1257) Springer, Berlin, Year 1997.

Stumme, Gerd. Concept Exploration -- Knowledge Acquisition in Knowledge Systems. . Shaker, Aachen, Year 1997.

Stumme, Gerd. Attribute Exploration with Background Implications and Exceptions. Data Analysis and Information Systems. Statistical and Conceptual approaches. Proc. GfKl'95. Studies in Classification, Data Analysis, and Knowledge Organization 7. editor(s) Bock, H.-H. and Polasek, W.. 457-469, Springer, Heidelberg, Year 1996.

Stumme, Gerd. Exploration Tools in Formal Concept Analysis. Ordinal and Symbolic Data Analysis. Proc. OSDA'95. Studies in Classification, Data Analysis, and Knowledge Organization 8. editor(s) Diday, E. and Lechevallier, Y. and Opitz, O.. 31-44, Springer, Heidelberg, Year 1996.

Stumme, Gerd. Knowledge acquisition by distributive concept exploration. Conceptual structures: applications, implementation and theory. editor(s) Ellis, G. and Levinson, R. and Rich, W. and Sowa, J. F.. Lecture Notes in Artificial Intelligence, 954: Springer--Verlag, Berlin--Heidelberg--New~York, Year 1995.