@incollection{Cawsey91-local,
  author	= {Cawsey, A.},
  editor	= {Luff, P. and Gilbert, N. and Frohlich, D.},
  title		= {A computational model of explanatory discourse: local interactions in a plan-based explanation},
  booktitle	= {Computers and Conversation},
  publisher	= {Academic Press},
  year		= {1991}
}