Z. Al Bawab, G. Mills, и J. Crespo. Proceedings of the 18th ACM SIGKDD international conference on Knowledge discovery and data mining, стр. 397--405. New York, NY, USA, ACM, (2012)
L. Duan, L. Xu, F. Guo, J. Lee, и B. Yan. Information Systems, 32 (7):
978 - 986(2007)<ce:title>Special Issue on Intelligent Information Processing</ce:title>.