T. Joachims, D. Freitag, and T. Mitchell. Proceedings of the International Joint Conference on
Artificial Intelligence (IJCAI), page 770--777. San Francisco, CA, Morgan Kaufmann, (1997)
H. Graubitz, M. Spiliopoulou, and K. Winkler. Proceedings of the First IEEE International Conference on Data Mining, San Jose, CA, page 171--178. (2001)
G. Stumme. Wissensmanagement mit Referenzmodellen
-- Konzepte für die Anwendungssystem- und Organisationsgestaltung, page 163--174. Heidelberg, Physica, (2002)
C. Aggarwal, S. Gates, and P. Yu. KDD'1999 -- Proceedings of the Fifth ACM SIGKDD
International Conference on Knowledge Discovery and Data
Mining, page 352--356. (1999)
G. Gottlob, C. Koch, R. Baumgartner, M. Herzog, and S. Flesca. Proceedings of the Twenty-third ACM SIGACT-SIGMOD-SIGART Symposium
on Principles of Database Systems, June 14-16, 2004, Paris, France, page 1-12. ACM, (2004)