@InCollection{shpitser:pea08-r340,
  author =       "Shpitser, I. and Pearl, J",
  booktitle =    "Proceedings of the Twenty-Third Conference on 
                  Artificial Intelligence",
  title =        "Dormant Independence",
  address =      "Menlo Park, CA",
  publisher =	 "AAAI Press",
  year =         2008,
  pages =        "1081--1087"
}