S. Owen, R. Anil, T. Dunning, и E. Friedman. Manning Publications Co., Manning Publications Co. 20 Baldwin Road PO Box 261 Shelter Island, NY 11964, First издание, (2011)
D. Mladenic, и M. Grobelnik. ICML '99: Proceedings of the Sixteenth International Conference on Machine Learning, стр. 258--267. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (1999)