@inproceedings{liu-etal-2020-cross-lingual,
    title = "Cross-Lingual Document Retrieval with Smooth Learning",
    author = "Liu, Jiapeng  and
      Zhang, Xiao  and
      Goldwasser, Dan  and
      Wang, Xiao",
    editor = "Scott, Donia  and
      Bel, Nuria  and
      Zong, Chengqing",
    booktitle = "Proceedings of the 28th International Conference on Computational Linguistics",
    month = dec,
    year = "2020",
    address = "Barcelona, Spain (Online)",
    publisher = "International Committee on Computational Linguistics",
    url = "https://aclanthology.org/2020.coling-main.323/",
    doi = "10.18653/v1/2020.coling-main.323",
    pages = "3616--3629"
}