@inproceedings{multilingualneuralmachinetranslationwith,
  title = {Multilingual Neural Machine Translation with Language Clustering},
  author = {Xu Tan and Jiale Chen and Di He and Yingce Xia and Tao Qin and Tie-Yan Liu},
  year = {2019},
  booktitle = {IJCNLP 2019 11},
  eprint = {1908.09324},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1908.09324v1},
}