@incollection{PulmanGeneralised,
  title = "Generalised Phrase Structure Grammar, Earley's Algorithm, and the Minimisation of Recursion",
  author = "S. G. Pulman",
  year = "1983",
  address = "Chichester",
  booktitle = "Automatic Natural Language Parsing",
  editor = "K. Sparck Jones and Y. Wilks",
  pages = "117--131",
  publisher = "{Ellis Horwood Ltd.}",
}