@Book{COLACL:2006,
  editor    = {Nicoletta Calzolari  and  Claire Cardie  and  Pierre Isabelle},
  title     = {Proceedings of the 21st International Conference on Computational Linguistics and 44th Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {2006},
  address   = {Sydney, Australia},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/P/P06/P06-1}
}