Conceptual Structures -- Broadening the Base. Proc. 9th International Conference on Conceptual Structures. editor(s) Delugach, H. and Stumme, G.. LNAI, (2120) Springer, Heidelberg, Year 2001.

Methoden und Techniken der Wissensverarbeitung. Workshop der 1. Tagung Professionelles Wissensmanagement
-- Erfahrungen und Visionen . editor(s) Gronau, N. and Stumme, G.. 287-378, Shaker, Aachen, Year 2001.

Hereth, J. and Stumme, G.. Reverse Pivoting in Conceptual Information Systems.. Conceptual Structures: Broadening the Base. . editor(s) Delugach, H. and Stumme, G.. LNAI, (2120) 202-215, Springer, Heidelberg, Year 2001.

Professionelles Wissensmanagement -- Erfahrungen und Visionen. Proc. WM '01. editor(s) Schnurr, H. P. and Staab, S. and Studer, R. and Stumme, G. and Sure, Y.. Shaker, Aachen, Year 2001.

Ontologies . editor(s) Stumme, G. and Maedche, A. and Staab, S.. CEUR-Proceedings, CEUR Proceedings, Aachen, Year 2001.