@InCollection{shpitser:pea06-r327,
  author =       "Shpitser, I. and Pearl, J.",
  booktitle =    "Proceedings of the Twenty-First National Conference on 
                  Artificial Intelligence",
  title =        "Identification of Joint Interventional Distributions in
                  Recursive Semi-{M}arkovian Causal Models",
  address =      "Menlo Park, CA",
  publisher =	 "AAAI Press",
  year =         2006,
  pages =        "1219--1226"
}