@inproceedings{LitmanHirschberg90,
  author	= {Litman, Diane and Hirschberg, Julia},
  year		= {1990},
  title		= {Disambiguating cue phrases in text and speech},
  booktitle	= {13th. International Conference on Computational Linguistics (COLING-90)},
  address	= {Helsinki, Finland},
}