A. Babak, B. Michael, und G. Ali. Proceedings of the 23rd national conference on Artificial intelligence - Volume 2, Seite 598--603. AAAI Press, (2008)
A. Woznica, A. Kalousis, und M. Hilario. ICML '07: Proceedings of the 24th international conference on Machine learning, Seite 1031--1038. New York, NY, USA, ACM, (2007)