@incollection{intronigel,
  author	= {Mann, William C.},
  year		= {February 1983},
  title		= {An introduction to the Nigel text generation grammar},
  booktitle	= {Nigel: A Systemic Grammar for Text Generation},
  note		= {This paper also appears in a volume of the \em Advances in Discourse Processes Series, R. Freedle (ed.): \em Systemic Perspectives on Discourse: Volume I, published by Ablex.},
  publisher	= {USC/Information Sciences Institute, RR-83-105}
}