@phdthesis{Sidner79-thesis,
  author	= {Sidner, Candace L.},
  year		= {1979},
  title		= {Towards a Computational Theory of Definite Anaphora Comprehension in English Discourse},
  note		= {Appears as Technical Report No. AI-TR-537},
  school	= {MIT, cambridge, MA}
}