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