@inproceedings{cheng-etal-2016-semi,
    title = "Semi-Supervised Learning for Neural Machine Translation",
    author = "Cheng, Yong  and
      Xu, Wei  and
      He, Zhongjun  and
      He, Wei  and
      Wu, Hua  and
      Sun, Maosong  and
      Liu, Yang",
    editor = "Erk, Katrin  and
      Smith, Noah A.",
    booktitle = "Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
    month = aug,
    year = "2016",
    address = "Berlin, Germany",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/P16-1185/",
    doi = "10.18653/v1/P16-1185",
    pages = "1965--1974"
}