J. Hernández, и M. Ram\'ırez. Proc. of 9th International Workshop on Inductive Logic
Programming, том 1634 из Lecture Notes in Artificial Intelligence, Springer-Verlag, Berlin, (1999)
J. Hernández-Orallo, и M. Ramírez-Quintana. Proc. of 9th International Workshop on Inductive Logic Programming, том 1634 из Lecture Notes in Artificial Intelligence, Springer-Verlag, Berlin, (1999)