@inproceedings{HorrocksPatel-Schneider98,
  author	= {Horrocks, Ian and Patel-Schneider, Peter F.},
  editor	= {Franconi, Enrico and Giacomo, Giuseppe De and MacGregor, Robert M. and Nutt, Werner and Welty, Christopher},
  title		= {DL systems comparison},
  booktitle	= {Proceedings of the 1998 International Workshop on Description Logics (DL'98)},
  year		= {1998},
  address	= {IRST, Povo-Trento, Italy}
}