@InProceedings{ HealeyEtAl03CogSci,
  author = "Healey, Patrick G. T. and Purver, Matthew and King, James and Ginzburg, Jonathan and Mills, Greg J.",
  title = "Experimenting with Clarification in Dialogue",
  booktitle = "Proceedings of the 25th Annual Meeting of the Cognitive Science Society",
  address = "Boston, {MA}",
  year = 2003,
  month = aug,
  url = "http://www.eecs.qmul.ac.uk/~mpurver/papers/healey-et-al03cogsci.pdf",
}