@article{disjunctivelogicprogramsversusnormal,
  title = {Disjunctive Logic Programs versus Normal Logic Programs},
  author = {Heng Zhang and Yan Zhang},
  year = {2013},
  eprint = {1304.0620},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1304.0620v1},
}