@phdthesis{Paris87-thesis,
  author	= {Paris, C{\'e}cile L.},
  year		= {1987},
  title		= {The Use of Explicit User Models in Text Generation: Tailoring to a User's Level of Expertise},
  note		= {Published by Pinter Publishers, London, 1993},
  school	= {Columbia University Department of Computer Science}
}