@inproceedings{ijcai2005p53,
  title     = {Equivalence in Abductive Logic},
  author    = {Inoue, Katsumi and Sakama, Chiaki},
  booktitle = {Proceedings of the Nineteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-05}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {472--476},
  year      = {2005},
  url       = {https://ijcai.org/proceedings/2005/53},
}