@incollection{Howarth98-seeing,
  author	= {Howarth, Richard J.},
  editor	= {Olivier, Patrick and Gapp, Klaus-Peter},
  title		= {On seeing spatial expressions},
  pages		= {37--56},
  booktitle	= {Representation and processing of spatial expressions},
  publisher	= {Lawrence Erlbaum Associates},
  year		= {1998},
  address	= {Mahwah, New Jersey}
}