@inproceedings{ijcai2007p78,
  title     = {Consistency Checking of Basic Cardinal Constraints over Connected Regions},
  author    = {Navarrete, Isabel and Morales, Antonio and Sciavicco, Guido},
  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     = {495--499},
  year      = {2007},
  url       = {https://ijcai.org/proceedings/2007/78},
}