@incollection{Rich89-book,
  author	= {Rich, Elaine A.},
  editor	= {Kobsa, Alfred and Wahlster, Wolfgang},
  year		= {1989},
  pages		= {35--51},
  title		= {Stereotypes and User Modelling},
  booktitle	= {User Models in Dialog Systems},
  publisher	= {Springer},
  series	= {Symbolic Computation Series},
  address	= {Berlin Heidelberg New York Tokyo}
}