@article{DBLP:journals/corr/FichteTW15,
  author = {Fichte, Johannes Klaus and Truszczynski, Miroslaw and Woltran, Stefan},
  title = {Dual-normal Logic Programs - the Forgotten Class},
  journal = {CoRR},
  volume = {abs/1507.05388},
  year = {2015}
}