@inproceedings{ijcai2005p258,
  title     = {A Non-monotonic Logic for Specifying and Querying Preferences},
  author    = {Boella, Guido and van der Torre, Leendert W. N.},
  booktitle = {Proceedings of the Nineteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-05}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {1549--1549},
  year      = {2005},
  url       = {https://ijcai.org/proceedings/2005/258},
}