@inproceedings{Schreiber-etal95,
  author	= {Schreiber, A. T. and Wielinga, B. J. and Jansweijer, W. H. J.},
  year		= {1995},
  title		= {The KACTUS view on the `O' word},
  booktitle	= {Proceedings of the IJCAI Workshop on Basic Ontological Issues in Knowledge Sharing}
}