@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.",
  pages = "115-137",
  title = "Symmetry definitions for constraint satisfaction problems",
  url = "http://ai.uwaterloo.ca/\%7Evanbeek/Constraints/Papers/CohenJJPS06.pdf",
  volume = "11",
  year = "2006",
}