@incollection{Bock87,
  author	= {Bock, J. and Irwin, D.},
  editor	= {Kempen, G.},
  title		= {Exploring Levels of Processing in Sentence Production},
  booktitle	= {Natural Language Generation: New Results in Artificial Intelligence, Psychology and Linguistics},
  publisher	= {Martinus Nijhoff Pbs},
  address	= {Dordrecht},
  year		= {1987}
}