@InProceedings{bobicev:2013:BEA8,
  author    = {Bobicev, Victoria},
  title     = {Native Language Identification with PPM},
  booktitle = {Proceedings of the Eighth Workshop on Innovative Use of NLP for Building Educational Applications},
  month     = {June},
  year      = {2013},
  address   = {Atlanta, Georgia},
  publisher = {Association for Computational Linguistics},
  pages     = {180--187},
  url       = {http://www.aclweb.org/anthology/W13-1724}
}