U. Fayyad, G. Piatetsky-Shapiro, and P. Smyth. Advances in knowledge discovery and data mining, American Association for Artificial Intelligence, Menlo Park, CA, USA, (1996)
H. Kim, S. Hwang, and H. Kim. SAC '07: Proceedings of the 2007 ACM symposium on Applied computing, page 1340--1345. New York, NY, USA, ACM Press, (2007)
A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. The Semantic Web: Research and Applications, volume 4011 of Lecture Notes in Computer Science, page 411-426. Heidelberg, Springer, (June 2006)
B. Berendt, A. Hotho, and G. Stumme. Proc. of the 1st Intl. Workshop on Representation and Analysis of Web Space, page 1--16. Technical University of Ostrava, (2005)