@InProceedings{matsuzaki-EtAl:2015:ACL-IJCNLP,
  author    = {Matsuzaki, Takuya  and  Fujita, Akira  and  Todo, Naoya  and  H. Arai, Noriko},
  title     = {Evaluating Machine Translation Systems with Second Language Proficiency Tests},
  booktitle = {Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 2: Short Papers)},
  month     = {July},
  year      = {2015},
  address   = {Beijing, China},
  publisher = {Association for Computational Linguistics},
  pages     = {145--149},
  url       = {http://www.aclweb.org/anthology/P15-2024}
}