@inproceedings{yang-etal-2017-towards,
    title = "Towards Bidirectional Hierarchical Representations for Attention-based Neural Machine Translation",
    author = "Yang, Baosong  and
      Wong, Derek F.  and
      Xiao, Tong  and
      Chao, Lidia S.  and
      Zhu, Jingbo",
    editor = "Palmer, Martha  and
      Hwa, Rebecca  and
      Riedel, Sebastian",
    booktitle = "Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing",
    month = sep,
    year = "2017",
    address = "Copenhagen, Denmark",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/D17-1150/",
    doi = "10.18653/v1/D17-1150",
    pages = "1432--1441"
}