E. Bakshy, J. Hofman, W. Mason, and D. Watts. Proceedings of the fourth ACM international conference on Web search and data mining, page 65--74. New York, NY, USA, ACM, (2011)
E. Bakshy, J. Hofman, W. Mason, and D. Watts. Proceedings of the fourth ACM international conference on Web search and data mining, page 65--74. New York, NY, USA, ACM, (2011)