@incollection{Butterworth80-pauses,
  author	= {Butterworth, B.},
  editor	= {Butterworth, B.},
  year		= {1980},
  title		= {Evidences from pauses in speech},
  booktitle	= {Language Production. Volume 1 : Speech and Talk},
  publisher	= {Academic Press},
  address	= {New York},
  pages		= {155--176}
}