@InCollection{pearl:10-r338,
  author = 	 "Pearl, Judea",
  title = 	 "The Mathematics of Causal Relations",
  booktitle =    "Causality and Psychopathology:  Finding the Determinants of Disorders and their Cures",
  year =         2010,
  editor =	 "P.E.\ Shrout and K.\ Keyes and K.\ Ornstein",
  publisher =    "Oxford University Press",
  pages =        "47--65"
}