@InProceedings{ FernandezPurver04Catalog,
  author = "Fern{\'a}ndez, Raquel and Purver, Matthew",
  title = "Information State Update: Semantics or Pragmatics?",
  year = 2004,
  booktitle = "Proceedings of the 8th {SEMDIAL} Workshop on the Semantics and Pragmatics of Dialogue ({C}atalog)",
  address = "Barcelona, Spain",
  month = jul,
  pages = "20--27",
  annote = "ISBN 84-609-2205-7",
  isbn = "84-609-2205-7",
  url = "http://www.dcs.qmul.ac.uk/~mpurver/papers/fernandez-purver04catalog.pdf"
}