@InProceedings{wu-EtAl:2013:BEA8,
  author    = {Wu, Ching-Yi  and  Lai, Po-Hsiang  and  Liu, Yang  and  Ng, Vincent},
  title     = {Simple Yet Powerful Native Language Identification on TOEFL11},
  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     = {152--156},
  url       = {http://www.aclweb.org/anthology/W13-1720}
}