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