@incollection{Frank97,
  author	= {Frank, Andrew U.},
  editor	= {Stock, Oliviero},
  title		= {Spatial ontology: a geographical information point of view},
  booktitle	= {Spatial and temporal reasoning},
  pages		= {135--153},
  publisher	= {Kluwer Academic Publishers},
  year		= {1997},
  address	= {Dordrecht}
}