@article{ClarkLucy75,
  author	= {Clark, H. H. and Lucy, P.},
  year		= {1975},
  title		= {Understanding what is meant from what is said: a study in conversationally conveyed requests},
  journal	= {Journal of Verbal Learning and Verbal Behaviour},
  volume	= {14},
  pages		= {56--72}
}