@inproceedings{ijcai2007p9,
  title     = {Optimal Soft Arc Consistency},
  author    = {Cooper, Martin C. and de Givry, Simon and Schiex, Thomas},
  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     = {68--72},
  year      = {2007},
  url       = {https://ijcai.org/proceedings/2007/9},
}