@inproceedings{fadaee-monz-2018-back,
    title = "Back-Translation Sampling by Targeting Difficult Words in Neural Machine Translation",
    author = "Fadaee, Marzieh  and
      Monz, Christof",
    editor = "Riloff, Ellen  and
      Chiang, David  and
      Hockenmaier, Julia  and
      Tsujii, Jun{'}ichi",
    booktitle = "Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing",
    month = oct # "-" # nov,
    year = "2018",
    address = "Brussels, Belgium",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/D18-1040/",
    doi = "10.18653/v1/D18-1040",
    pages = "436--446"
}