Grahl, Miranda, Hotho, Andreas and Stumme, Gerd. "Conceptual Clustering of Social Bookmark Sites." Paper presented at the meeting of the Workshop Proceedings of Lernen -- Wissensentdeckung -- Adaptivität (LWA 2007), 2007.

Stumme, Gerd. "Conceptual Knowledge Processing (Invited Talk)." Paper presented at the meeting of the Ontologies-based techniques for DataBases and Information Systems, Trondheim, 2005.

Cimiano, Philipp, Hotho, Andreas, Stumme, Gerd and Tane, Julien. "Conceptual Knowledge Processing with Formal Concept Analysis and Ontologies." Paper presented at the meeting of the Concept Lattices, Heidelberg, 2004.