H. Ma, H. Yang, I. King, and M. Lyu. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, page 709--718. New York, NY, USA, ACM, (2008)
Q. Mei, D. Zhou, and K. Church. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, page 469--478. New York, NY, USA, ACM, (2008)
R. Kumar, A. Tomkins, and E. Vee. WSDM '08: Proceedings of the international conference on Web search and web data mining, page 129--138. New York, NY, USA, ACM, (2008)