C. Clarke, E. Agichtein, S. Dumais, and R. White. Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, page 135--142. New York, NY, USA, ACM, (2007)
C. Clarke, E. Agichtein, S. Dumais, and R. White. SIGIR '07: Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, page 135--142. New York, NY, USA, ACM Press, (2007)