@inproceedings{Expressiveness,
  title = "Expressiveness of Binary Constraints for the Frequency Assignment Problem",
  author = "N.W.Dunkin and P.G.Jeavons",
  year = "1997",
  booktitle = "DIAL-M Workshop, 3rd Annual ACM/IEEE International Conference on Mobile Computing and Networking (MOBICOM'97)",
  url = "ftp://ftp.cs.rhul.ac.uk/pub/constraints/dunk97.ps",
}