@inproceedings{informationaggregationformultihead,
  title = {Information Aggregation for Multi-Head Attention with Routing-by-Agreement},
  author = {Jian Li and Baosong Yang and Zi-Yi Dou and Xing Wang and Michael R. Lyu and Zhaopeng Tu},
  year = {2019},
  booktitle = {NAACL 2019 6},
  eprint = {1904.03100},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1904.03100v1},
}