@inproceedings{ijcai1995p83,
  title     = {Valued Constraint Satisfaction Problems: Hard and Easy Problems},
  author    = {Schiex, Thomas and Fargier, Helene and Verfaillie, Gérard},
  booktitle = {Proceedings of the Fourteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-95}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Chris S. Mellish},
  pages     = {631--638},
  year      = {1995},
  note      = {Constraint Satisfaction},
  url       = {https://ijcai.org/proceedings/1995/83},
}