M. Richardson, A. Prakash, and E. Brill. WWW '06: Proceedings of the 15th international conference on World Wide Web, page 707--715. New York, NY, USA, ACM Press, (2006)
S. Vassilvitskii, and E. Brill. SIGIR '06: Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, page 147--153. New York, NY, USA, ACM Press, (2006)
E. Agichtein, E. Brill, and S. Dumais. SIGIR '06: Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, page 19--26. New York, NY, USA, ACM Press, (2006)
S. Dumais, E. Cutrell, J. Cadiz, G. Jancke, R. Sarin, and D. Robbins. SIGIR '03: Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval, page 72--79. ACM Press, (July 2003)