@InProceedings{ Purver02SIGdial,
  author = "Purver, Matthew",
  title = "Processing Unknown Words in a Dialogue System",
  year = 2002,
  booktitle = "Proceedings of the 3rd SIGdial Workshop on Discourse and Dialogue",
  address = "Philadelphia, {PA}",
  month = jul,
  organization = "Association for Computational Linguistics",
  pages = "174--183",
  url = "http://www.eecs.qmul.ac.uk/~mpurver/papers/purver02sigdial.pdf",
  url = "http://anthology.aclweb.org/W02-0222",
  doi = "10.3115/1118121.1118143",
  url = "http://dx.doi.org/10.3115/1118121.1118143",
}