S. Overell, B. Sigurbjörnsson, and R. van Zwol. Proceedings of the Second ACM International Conference on Web Search and Data Mining, page 64--73. New York, NY, USA, ACM, (2009)
K. Bischoff, C. Firan, C. Kadar, W. Nejdl, and R. Paiu. Proceedings of the 5th International Conference on Advanced Data Mining and Applications, page 31--42. Berlin, Heidelberg, Springer-Verlag, (2009)
B. Shapira, M. Taieb-Maimon, and A. Moskowitz. Proceedings of the 2006 ACM symposium on Applied computing, page 1118--1119. New York, NY, USA, ACM, (2006)
M. Claypool, P. Le, M. Wased, and D. Brown. Proceedings of the 6th international conference on Intelligent user interfaces, page 33--40. New York, NY, USA, ACM, (2001)