@inproceedings{SolsFormaGroup,
  title = "Efficiently Solving Problems where the Solutions Form a Group",
  author = "Karen Petrie with Chris Jefferson",
  year = "2008",
  journal = "In Proc. CP 2008",
  pages = "529-533",
  publisher = "Springer",
  series = "LNCS 5702",
  url = "http://www.springerlink.com/content/j727024720947621/?p=ef62f9beccf74986b131fa62813910f3&pi=22",
}