D. Donato, F. Bonchi, T. Chi, and Y. Maarek. Proceedings of the 19th international conference on World wide web, page 321--330. New York, NY, USA, ACM, (2010)
J. Leskovec, L. Backstrom, R. Kumar, and A. Tomkins. KDD '08: Proceeding of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining, page 462--470. New York, NY, USA, ACM, (2008)
J. Leskovec, L. Backstrom, R. Kumar, and A. Tomkins. KDD '08: Proceeding of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining, page 462--470. New York, NY, USA, ACM, (2008)
A. Broder, M. Fontoura, V. Josifovski, and L. Riedel. SIGIR '07: Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, page 559--566. New York, NY, USA, ACM, (2007)
B. Sigurbjörnsson, and R. van Zwol. WWW '08: Proceeding of the 17th international conference on World
Wide Web, page 327--336. New York, NY, USA, ACM, (2008)
B. Sigurbj�rnsson, and R. van Zwol. WWW '08: Proceeding of the 17th international conference on World
Wide Web, page 327--336. New York, NY, USA, ACM, (2008)