@inproceedings{Block90-referring,
  author	= {Block, R. and Horacek, H.},
  title		= {Generating Referring Expressions Using Multiple Knowledge Sources},
  booktitle	= {Proceedings of the 13th. International Conference on Computational Linguistics (COLING'90)},
  publisher	= {International Committee on Computational Linguistics},
  address	= {Helsinki, Finland},
  year		= {1990}
}