@inproceedings{MML,
  author	= {Mann, William C. and Moore, J. A. and Levin, J. A.},
  month		= aug,
  year		= {1977},
  title		= {A Comprehension Model for Human Dialogue},
  booktitle	= {Proceedings of the Fifth International Joint Conference on Artificial Intelligence},
  volume	= {1},
  pages		= {77--87},
  publisher	= {Massachusetts Institute of Technology}
}