@inproceedings{wang-etal-2021-language-coverage,
    title = "On the Language Coverage Bias for Neural Machine Translation",
    author = "Wang, Shuo  and
      Tu, Zhaopeng  and
      Tan, Zhixing  and
      Shi, Shuming  and
      Sun, Maosong  and
      Liu, Yang",
    editor = "Zong, Chengqing  and
      Xia, Fei  and
      Li, Wenjie  and
      Navigli, Roberto",
    booktitle = "Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021",
    month = aug,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2021.findings-acl.422/",
    doi = "10.18653/v1/2021.findings-acl.422",
    pages = "4778--4790"
}