C. Schmitz, A. Hotho, R. Jäschke, and G. Stumme. Data Science and Classification (Proc. IFCS 2006 Conference), page 261-270. Berlin/Heidelberg, Springer, (July 2006)Ljubljana.
B. Krause, R. Jäschke, A. Hotho, and G. Stumme. HT '08: Proceedings of the Nineteenth ACM Conference on Hypertext and Hypermedia, page 157--166. New York, NY, USA, ACM, (2008)
M. Zack. HICSS '00: Proceedings of the 33rd Hawaii International Conference on System Sciences, 7, page 7043. Los Alamitos, CA, USA, IEEE Computer Society, (2000)
B. Hoser, A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. The Semantic Web: Research and Applications, Springer, (June 2006)Proceedings of the 3rd European Semantic Web Conference, Budva, Montenegro.