E. Gabrilovich, S. Dumais, and E. Horvitz. WWW '04: Proceedings of the 13th international conference on World Wide Web, page 482--490. New York, NY, USA, ACM Press, (2004)
P. Chesnais, M. Mucklo, and J. Sheena. Proceedings of the IEEE Second International Workshop on Community Networking Integrating Multimedia Services to the Home, page 275--282. (1995)