@article{SymmetryDefinitions,
  author = "David Cohen and Peter Jeavons and Christopher Jefferson and Karen Petrie and Barbara Smith",
  doi = "10.1007/s10601-006-8059-8",
  journal = "Constraints ",
  note = "Received a Best Paper award. Shorter version appears in: Proceedings of CP'05, Lecture Notes in Computer Science 3709 : \url{http://web.comlab.ox.ac.uk/oucl/research/areas/constraints/publications/CP05symmetry.pdf}",
  pages = "115-137",
  title = "Symmetry definitions for constraint satisfaction problems",
  url = "http://ai.uwaterloo.ca/\%7Evanbeek/Constraints/Papers/CohenJJPS06.pdf",
  year = "2006",
}