A. Zimdars, D. Chickering, and C. Meek. UAI '01: Proceedings of the 17th Conference in Uncertainty in Artificial Intelligence, page 580--588. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (2001)
T. Klassen, and M. Heywood. Proceedings of the 2002 International Joint Conference
on Neural Networks IJCNN'02, page 1900--1905. Hilton Hawaiian Village Hotel, Honolulu, Hawaii, IEEE Press, (12-17 May 2002)