J. Ahn, P. Brusilovsky, J. Grady, D. He, и S. Syn. WWW '07: Proceedings of the 16th international conference on World Wide Web, стр. 11--20. New York, NY, USA, ACM Press, (2007)
J. Ahn, P. Brusilovsky, J. Grady, D. He, и S. Syn. WWW '07: Proceedings of the 16th international conference on World Wide Web, стр. 11--20. New York, NY, USA, ACM Press, (2007)