@incollection{PulmanExpressivity,
  title = "Expressivity of Lean Formalisms",
  author = "S. G. Pulman",
  year = "1994",
  address = "Luxembourg",
  booktitle = "Grammatical Formalisms: Issues in Migration",
  editor = "S. Markantonatou and L. Sadler",
  pages = "35--59",
  publisher = "Office for Official Publications of the European Communities",
  series = "{Studies in Machine Translation and Natural Language Processing}",
  volume = "4",
}