@inproceedings{Appelt88,
  author	= {Appelt, Douglas E.},
  month		= jun,
  year		= {1988},
  title		= {A Practical Nonmonotonic Theory for Reasoning about Speech Acts},
  booktitle	= {Proceedings of the 26th Annual Meeting},
  pages		= {170--178},
  organization	= {Association for Computational Linguistics}
}