@incollection{Smith2001-environments,
  author	= {Smith, Barry},
  editor	= {Frank, Andrew and Raper, Jonathan and Cheylan, Jean-Paul},
  URL		= {http://ontology.buffalo.edu/smith/articles/napflion.html},
  urlpage	= {http://ontology.buffalo.edu/smith/articles/napflion.html},
  title		= {Objects and Their Environments: From Aristotle to Ecological Psychology},
  booktitle	= {The Life and Motion of Socio-Economic Units (GISDATA 8)},
  publisher	= {Taylor and Francis},
  address	= {London},
  year		= {2001},
  pages		= {79--97}
}