@incollection{Levelt93,
  author	= {Levelt, W.},
  editor	= {Beckmann and Heyer, G.},
  title		= {Lexical selection, or how to bridge the major rift in language processing},
  booktitle	= {Theorie und Praxis des Lexicons},
  publisher	= {Walter de Gruyter},
  address	= {Berlin},
  year		= {1993}
}