@inproceedings{Birnbaum80,
  author	= {Birnbaum, L. and Flowers, M. and McGuire, R.},
  month		= aug,
  year		= {1980},
  title		= {Towards an A.I. model of argumentation},
  booktitle	= {Proceedings of the First National Conference on Artificial Intelligence},
  organization	= {Stanford University}
}