@inproceedings{headdrivenphrasestructuregrammarparsing,
  title = {Head-Driven Phrase Structure Grammar Parsing on Penn Treebank},
  author = {Junru Zhou and Hai Zhao},
  year = {2019},
  booktitle = {ACL 2019 7},
  eprint = {1907.02684},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1907.02684v4},
}