@InProceedings{colman-eshghi-healey:2008:SIGDIAL,
  author    = {Colman, Marcus  and  Eshghi, Arash  and  Healey, Pat},
  title     = {Quantifying Ellipsis in Dialogue: an index of mutual understanding},
  booktitle = {Proceedings of the 9th SIGdial Workshop on Discourse and Dialogue},
  month     = {June},
  year      = {2008},
  address   = {Columbus, Ohio},
  publisher = {Association for Computational Linguistics},
  pages     = {96--99},
  url       = {http://www.aclweb.org/anthology/W/W08/W08-0116}
}