@incollection{Appelt88-plan,
  author	= {Appelt, D.},
  editor	= {McDonald, D. and Bolc, L.},
  year		= {1988},
  title		= {Planning Natural Language Referring Expressions},
  booktitle	= {Natural Language Generation Systems},
  pages		= {69--97},
  publisher	= {Springer},
  address	= {Berlin},
}