@InCollection{balke:pea94b,
  author = 	 "Balke, A.  and Pearl, J.",
  title = 	 "Counterfactual Probabilities:  Computational
                  Methods, Bounds, and Applications",
  booktitle =	 "Uncertainty in Artificial Intelligence 10",
  publisher =	 "Morgan Kaufmann",
  year =	 1994,
  editor =	 "R.~Lopez de Mantaras and D.~Poole",
  pages =	 "46--54",
  address =	 "San Mateo, CA"
}