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.

Stumme, G.. 8th International Conference on Conceptual Structures. Conference Report. In Knowledge Organization, (27) 3: 162, Year 2000.

Working with Conceptual Structures -- Contributions to ICCS 2000. Suppl. Proc. 8th International
Conference on Conceptual Structures (ICCS 2000). editor(s) Stumme, G.. Shaker, Aachen, Year 2000.

Mineau, Guy and Stumme, Gerd and Wille, Rudolf. Conceptual Structures Represented by Conceptual Graphs and Formal Concept Analysis. Conceptual Structures: Standards and Practices. Proc. ICCS '99. editor(s) Tepfenhart, W. and Cyre, W.. LNAI, (1640) 423-441, Springer, Heidelberg, Year 1999.