@Book{Tutorials:2009,
  editor    = {Ciprian Chelba  and  Paul Kantor  and  Brian Roark},
  title     = {Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, Companion Volume: Tutorial Abstracts},
  month     = {May},
  year      = {2009},
  address   = {Boulder, Colorado},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/N/N09/N09-4}
}