@incollection{Halliday93-corpus,
  author	= {Halliday, M. A. K.},
  editor	= {Aumer, K. and Altenberg, B.},
  year		= {1993},
  title		= {Corpus studies and probabilistic grammar},
  booktitle	= {English Corpus Linguistics: Studies in Honour of Jan Svartvik}
}