@incollection{Buchberger-etal91-dialog,
  author	= {Buchberger, E. and Garner, E. and Heinz, W. and Matiasek, J. and Pfahringer, B.},
  editor	= {Kaindl, H.},
  title		= {VIE-DU -- Dialogue by Unification},
  booktitle	= {7. {\"O}sterreichische Artificial-Intelligence Tagung},
  pages		= {42--51},
  publisher	= {Springer},
  address	= {Berlin, New York},
  year		= {1991},
}