@incollection{Hovy90-issues,
  author	= {Hovy, Eduard H.},
  editor	= {Dale, Robert and Mellish, Chris and Zock, Michael},
  year		= {1990},
  title		= {Unresolved issues in paragraph planning},
  booktitle	= {Current research in Natural Language Generation},
  pages		= {17--45},
  publisher	= {Academic Press},
  address	= {London}
}