Z. Li, B. Ding, J. Han, R. Kays, and P. Nye. Proceedings of the 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 1099--1108. New York, NY, USA, ACM, (2010)
S. Feng, X. Li, Y. Zeng, G. Cong, Y. Chee, and Q. Yuan. Proceedings of the 24th International Conference on Artificial Intelligence, page 2069--2075. AAAI Press, (2015)