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J. Zhang, M. Ackerman, and L. Adamic. WWW '07: Proceedings of the 16th international conference on World Wide Web, page 221--230. New York, NY, USA, ACM, (2007)
J. Zhang, M. Ackerman, L. Adamic, and K. Nam. UIST '07: Proceedings of the 20th annual ACM symposium on User interface software and technology, page 111--114. New York, NY, USA, ACM, (2007)
J. Zhang, M. Ackerman, and L. Adamic. Proceedings of the 16th international conference on World Wide Web, page 221--230. New York, NY, USA, ACM, (2007)