@inproceedings{backtranslationsamplingbytargeting,
  title = {Back-Translation Sampling by Targeting Difficult Words in Neural Machine Translation},
  author = {Marzieh Fadaee and Christof Monz},
  year = {2018},
  booktitle = {EMNLP 2018 10},
  eprint = {1808.09006},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1808.09006v2},
}