@article{GreenCarberry99,
  author	= {Green, Nancy and Carberry, Sandra},
  year		= {1999},
  title		= {A Computational Mechanism for Initiative in Answer Generation},
  journal	= {User modelling and user-adapted interaction},
  volume	= {9},
  pages		= {93--132},
  note		= {Reprinted in: S. Haller, A. Kobsa and S. McRoy (eds.)(1999)\em Computational Models of Mixed-Initiative Interaction, Dordrecht: Kluwer, pp277--316},
}