B. Boser, I. Guyon, und V. Vapnik. COLT '92: Proceedings of the fifth annual workshop on Computational
learning theory, Seite 144--152. New York, NY, USA, ACM Press, (1992)
J. Eggermont, J. Kok, und W. Kosters. Proceedings of the 2004 Symposium on Applied Computing
(ACM SAC'04), Seite 1001--1005. Nicosia, Cyprus, (14-17 March 2004)