@incollection{MaierHovy93,
  author	= {Maier, Elisabeth A. and Hovy, Eduard H.},
  editor	= {Horacek, Helmut and Zock, Michael},
  year		= {1993},
  title		= {Organizing discourse structure relations using metafunctions},
  booktitle	= {New concepts in natural language generation},
  pages		= {69--86},
  publisher	= {Pinter Publishers},
  address	= {London}
}