@InProceedings{ HealeyEtAl11STD,
  author = "Healey, Patrick G. T. and Eshghi, Arash and Purver, Matthew and Howes, Christine",
  title = "Making a Contribution: Processing Clarification Requests in Dialogue",
  year = 2011,
  booktitle = "Proceedings of the 21st Annual Meeting of the Society for Text and Discourse",
  address = "Poitiers",
  month = jul,
  url = "http://www.eecs.qmul.ac.uk/~mpurver/papers/healey-et-al11std.pdf",
}