Paul T. Baffes Raymond J. Mooney A Novel Application of Theory Refinement to Student Modeling. 403-408 1996 conf/aaai/1996-1 AAAI/IAAI, Vol. 1 db/conf/aaai/aaai96-1.html#BaffesM96 http://www.aaai.org/Library/AAAI/1996/aaai96-061.php