Y. Wu, H. Siy, M. Zand, and V. Winter. Computational Science – ICCS 2007
7th International Conference, Beijing, China, May 27 - 30, 2007, Proceedings, Part III, page 790--797. (2007)
R. Feldman, and I. Dagan. Proceedings of the First International Conference on Knowledge Discovery (KDD '1996), August 20-21, Montreal, Quebec, Canada, page 112--117. AAAI Press, (1995)