@article{GapLexJournal,
  title = "GAPLex: Generalised Static Symmetry Breaking",
  author = "Karen Petrie with Chris Jefferson and Tom Kelsey and Steve Linton",
  year = "2007",
  chapter = "9",
  journal = "Trends in Constraint Programming",
  pages = "329-376",
  publisher = "ISTE",
  url = "http://www.iste.co.uk/index.php?isbn=9781905209972",
}