D. Romero, B. Meeder, and J. Kleinberg. Proceedings of the 20th international conference on World wide web, page 695--704. New York, NY, USA, ACM, (2011)
D. Romero, B. Meeder, and J. Kleinberg. Proceedings of the 20th international conference on World wide web, page 695--704. New York, NY, USA, ACM, (2011)
D. Romero, B. Meeder, and J. Kleinberg. Proceedings of the 20th international conference on World wide web, page 695--704. New York, NY, USA, ACM, (2011)
D. Romero, B. Meeder, and J. Kleinberg. Proceedings of the 20th International Conference on World Wide Web, page 695--704. New York, NY, USA, ACM, (2011)