@incollection{GrenonSmith-fc,
  author	= {Grenon, Pierre and Smith, Barry},
  URL		= {http://ontology.buffalo.edu/smith/articles/SNAP\_SPAN.pdf},
  pdf		= {http://ontology.buffalo.edu/smith/articles/SNAP\_SPAN.pdf},
  title		= {SNAP and SPAN: Prolegomenon to Geodynamic Ontology},
  booktitle	= {Spatial Cognition and Computation},
  year		= {forthcoming}
}