M. Schedl, T. Pohle, P. Knees, and G. Widmer. Proceedings of the Seventh International Conference on Music Information Retrieval (ISMIR'06), Victoria, Canada, (October 2006)
G. Geleijnse, and J. Korst. Proceedings Third Philips Symposium on Intelligent Algorithms (SOIA 2006), page 171 -- 182. Eindhoven, the Netherlands, (December 2006)
D. Milne, O. Medelyan, and I. Witten. ACM International Conference on Web Intelligence (WI 2006 Main Conference Proceedings)(WI'06), page 442-448. (2006)