C. Ziegler, S. McNee, J. Konstan, and G. Lausen. WWW '05: Proceedings of the 14th international conference on World Wide Web, page 22--32. New York, NY, USA, ACM, (2005)
C. Ziegler, S. McNee, J. Konstan, and G. Lausen. WWW '05: Proceedings of the 14th international conference on World Wide Web, page 22--32. New York, NY, USA, ACM Press, (2005)