@incollection{Grosz81-focusing,
  author	= {Grosz, Barbara J.},
  editor	= {Webber, Bonnie L. and Joshi, Aravind K. and Sag, Ivan A.},
  title		= {Focusing and descriptions in natural language dialogues},
  year		= {1981},
  booktitle	= {Elements of Discourse Processing},
  publisher	= {Cambridge University Press},
  address	= {New York},
  pages		= {84--105}
}