@incollection{OgdenBernick97,
  author	= {Ogden, W. C. and Bernick, P.},
  editor	= {Helander, M.},
  year		= {1997},
  title		= {Using Natural Language Interfaces},
  booktitle	= {Handbook of Human-Computer Interaction},
  address	= {North Holland},
  publisher	= {Elsevier}
}