@inproceedings{ijcai2009p99,
  title     = {Towards Efficient Consistency Enforcement for Global Constraints in Weighted Constraint Satisfaction},
  author    = {Lee, Jimmy Ho-Man and Leung, Ka Lun},
  booktitle = {Proceedings of the Twenty-First International Joint Conference on
               Artificial Intelligence, {IJCAI-09}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Hiroaki Kitano},
  pages     = {559--564},
  year      = {2009},
  url       = {https://ijcai.org/proceedings/2009/99},
}