J. Sun, H. Zeng, H. Liu, Y. Lu, и Z. Chen. WWW '05: Proceedings of the 14th international conference on World Wide Web, стр. 382--390. New York, NY, USA, ACM, (2005)
J. Sun, H. Zeng, H. Liu, Y. Lu, и Z. Chen. WWW '05: Proceedings of the 14th international conference on World Wide Web, стр. 382--390. New York, NY, USA, ACM Press, (мая 2005)