@article{SitterStein92,
  author	= {Sitter, Stefan and Stein, Adelheit},
  year		= {1992},
  title		= {Modeling the Illocutionary Aspects of Information-Seeking Dialogues},
  journal	= {Information Processing and Management},
  volume	= {28},
  number	= {2},
  pages		= {165--180}
}