@article{DBLP:journals/jiis/WangZ01, title = {An Extension to {GCWA} and Query Evaluation for Disjunctive Deductive Databases}, author = {Wang, Kewen and Zhou, Lizhu}, journal = {J. Intell. Inf. Syst.}, number = {3}, pages = {229--253}, volume = {16}, year = {2001} }