@article{Hirst81,
  author	= {Hirst, Graeme},
  month		= aprjun,
  year		= {1981},
  title		= {Discourse-Oriented Anaphora Resolution in Natural Language Understanding: A Review},
  journal	= {American Journal for Computational Linguistics},
  volume	= {7},
  number	= {2},
  pages		= {85--98}
}