Y. Zhang, J. Tang, Z. Yang, J. Pei, and P. Yu. Proceedings of the 21th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 1485--1494. New York, NY, USA, ACM, (2015)
E. Raad, R. Chbeir, and A. Dipanda. Proceedings of the 2010 13th International Conference on Network-Based Information Systems, page 297--304. Washington, DC, USA, IEEE Computer Society, (2010)