Y. Sun, J. Han, C. Aggarwal, and N. Chawla. Proceedings of the fifth ACM international conference on Web search and data mining, page 663--672. New York, NY, USA, ACM, (2012)
Y. Sun, R. Barber, M. Gupta, C. Aggarwal, and J. Han. Proceedings of the 2011 International Conference on Advances in Social Networks Analysis and Mining, page 121--128. Washington, DC, USA, IEEE Computer Society, (2011)