@incollection{van-der-Sandt89,
  author	= {van der Sandt, Rob A.},
  year		= {1989},
  title		= {Presupposition and discourse structure},
  booktitle	= {Semantics and contextual expression},
  series	= {Groningen-Amsterdam Studies in Semantics},
  pages		= {267--294},
  publisher	= {Foris Publications},
  address	= {Dordrecht}
}