@inproceedings{dorrvoss93,
  author	= {Dorr, Bonnie J. and Voss, Clare R.},
  year		= {1993},
  title		= {Machine Translation of spatial expressions: defining the relation between an interlingua and a knowledge representation system},
  booktitle	= {AAAI93, Proceedings of the 12th Conference of the American Association for Artificial Intelligence}
}