@article{Schank-etal75,
  author	= {Schank, Roger C. and Goldman, Niel and Reiger, Christopher K.},
  month		= jul,
  year		= {1975},
  title		= {Inference and paraphrase by computer},
  journal	= {Journal of the ACM},
  volume	= {22},
  number	= {3},
  pages		= {309--328}
}