@inproceedings{ijcai2007p51,
  title     = {Complexity Results for Checking Equivalence of Stratified Logic Programs},
  author    = {Eiter, Thomas and Fink, Michael and Tompits, Hans and Woltran, Stefan},
  booktitle = {Proceedings of the Twentieth International Joint Conference on
               Artificial Intelligence, {IJCAI-07}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Ramon López de Mántaras},
  pages     = {330--334},
  year      = {2007},
  url       = {https://ijcai.org/proceedings/2007/51},
}