@InProceedings{gurevich-deane:2007:ShortPapers,
  author    = {Gurevich, Olga  and  Deane, Paul},
  title     = {Document Similarity Measures to Distinguish Native vs.\ Non-Native Essay Writers},
  booktitle = {Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Companion Volume, Short Papers},
  month     = {April},
  year      = {2007},
  address   = {Rochester, New York},
  publisher = {Association for Computational Linguistics},
  pages     = {49--52},
  url       = {http://www.aclweb.org/anthology/N/N07/N07-2013}
}