@incollection{Kempen86,
  author	= {Kempen, Gerard},
  editor	= {Batori, I. and Lenders, W. and Putschke, W.},
  year		= {1986},
  title		= {Language Generation Systems},
  booktitle	= {Computational Linguistics. An International Handbook on Computer Oriented Language Research and Applications},
  publisher	= {Walter de Gruyter},
  address	= {Berlin and New York}
}