@Article{Modeling_the_user_in_natural_language_systems,
  author = "Robert  Kass and Tim  Finin",
  title = "{Modeling the user in natural language systems}",
  month = "January",
  year = "1988",
  pages = "5-22",
  number = "3",
  volume = "14",
  journal = "Computational Linguistics ",
  publisher = "MIT Press",
}