TY - JOUR A1 - Delgrande, James Patrick A1 - Schaub, Torsten H. T1 - Compiling specificity into approaches to nonmonotonic reasoning Y1 - 1997 SN - 0004-3702 ER - TY - JOUR A1 - Delgrande, James Patrick A1 - Schaub, Torsten H. T1 - Compiling reasoning with and about preferences into default logic Y1 - 1997 SN - 1-558-60480-4 SN - 1045-0823 ER -