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K. Avrachenkov, V. Dobrynin, D. Nemirovsky, S. Pham, and E. Smirnova. SIGIR '08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, page 873--874. New York, NY, USA, ACM, (2008)
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)