Z. Li, B. Ding, J. Han, R. Kays, and P. Nye. Proceedings of the 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 1099--1108. New York, NY, USA, ACM, (2010)
S. Jespersen, T. Pedersen, and J. Thorhauge. Proceedings of the 5th ACM International Workshop on Web Information and Data Management, page 82--89. New York, NY, USA, ACM, (2003)
J. Borges, and M. Levene. European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD), page 34--45. Berlin, Heidelberg, Springer Berlin Heidelberg, (2005)