@inproceedings{towardsbidirectionalhierarchical,
  title = {Towards Bidirectional Hierarchical Representations for Attention-Based Neural Machine Translation},
  author = {Baosong Yang and Derek F. Wong and Tong Xiao and Lidia S. Chao and Jingbo Zhu},
  year = {2017},
  booktitle = {EMNLP 2017 9},
  eprint = {1707.05114},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1707.05114v1},
}