Y. Dong, R. Johnson, and N. Chawla. Proceedings of the Eighth ACM International Conference on Web Search and Data Mining, page 149--158. New York, NY, USA, ACM, (2015)
R. Yan, C. Huang, J. Tang, Y. Zhang, and X. Li. Proceedings of the 12th ACM/IEEE-CS joint conference on Digital Libraries, page 51--60. New York, NY, USA, ACM, (2012)
S. Aya, C. Lagoze, and T. Joachims. Proceedings of the International Conference on Knowledge Management, page 287--298. World Scientific Publishing, (October 2005)
U. Sandström, D. Wadskog, and S. Karlsson. ISSI 2005 : Proceedings of the 10th International Conference of the International Society for Scientometrics and Informetrics, Vols 1 and 2, page 690--691. (2005)QC 20120202.