@inproceedings{AsherMorreau91,
  author	= {Asher, Nicholas and Morreau, Michael},
  editor	= {Mylopoulos, John and Reiter, Ray},
  year		= {1991},
  title		= {Common Sense Entailment: A Modal Theory of Nonmonotonic Reasoning},
  booktitle	= {Proceedings to the 12th International Joint Conference on Artificial Intelligence},
  volume	= {2},
  pages		= {387--392},
  publisher	= {Morgan Kaufmann Publishers, Inc.},
  address	= {San Mateo, CA}
}