@article{schank80-acl,
  author	= {Schank, Roger C. and Lebowitz, Michael and Birnbaum, Lawrence},
  year		= {1980},
  title		= {An Integrated Understander},
  journal	= {American Journal of Computational Linguistics},
  volume	= {6},
  number	= {1},
  pages		= {13--30}
}