A. Chernov, and M. Hutter. Proc. 16th International Conf. on Algorithmic Learning Theory (ALT'05), volume 3734 of LNAI, page 414--428. Singapore, Springer, Berlin, (2005)
M. Hutter, and J. Poland. Proc. 15th International Conf. on Algorithmic Learning Theory (ALT'04), volume 3244 of LNAI, page 279--293. Padova, Springer, Berlin, (2004)