@InProceedings{rapp:2009:Short,
  author    = {Rapp, Reinhard},
  title     = {The Backtranslation Score: Automatic MT Evalution at the Sentence Level without Reference Translations},
  booktitle = {Proceedings of the ACL-IJCNLP 2009 Conference Short Papers},
  month     = {August},
  year      = {2009},
  address   = {Suntec, Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {133--136},
  url       = {http://www.aclweb.org/anthology/P/P09/P09-2034}
}