R. Ieong, P. Lai, K. Chow, F. Law, M. Kwan, and K. Tse. IFIP Int. Conf. Digital Forensics, volume 306 of IFIP Advances in Information and Communication Technology, page 175-186. Springer, (2009)
R. Agrawal, S. Gollapudi, A. Halverson, and S. Ieong. WSDM '09: Proceedings of the Second ACM International Conference on Web Search and Data Mining, page 5--14. New York, NY, USA, ACM, (2009)