@inproceedings{haveattentionheadsinbertlearned,
  title = {Have Attention Heads in BERT Learned Constituency Grammar?},
  author = {Ziyang Luo},
  year = {2021},
  booktitle = {EACL 2021 2},
  eprint = {2102.07926},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.07926v2},
}