L. Backstrom, and J. Leskovec. Proceedings of the fourth ACM international conference on Web search and data mining, page 635--644. New York, NY, USA, ACM, (2011)
X. Zhu, W. Nejdl, and M. Georgescu. The 37th International ACM SIGIR conference on research and development in Information Retrieval (SIGIR’14), (July 2014)
X. Zhu, W. Nejdl, and M. Georgescu. The 37th International ACM SIGIR conference on research and development in Information Retrieval (SIGIR’14), (July 2014)