C. Aggarwal, J. Wolf, K. Wu, and P. Yu. KDD '99: Proceedings of the fifth ACM SIGKDD international conference on Knowledge discovery and data mining, page 201--212. New York, NY, USA, ACM, (1999)
G. Xue, H. Zeng, Z. Chen, Y. Yu, W. Ma, W. Xi, and W. Fan. CIKM '04: Proceedings of the thirteenth ACM international conference on Information and knowledge management, page 118--126. New York, NY, USA, ACM, (2004)
H. Tong, C. Faloutsos, and J. Pan. ICDM '06: Proceedings of the Sixth International Conference on Data Mining, page 613--622. Washington, DC, USA, IEEE Computer Society, (2006)