@inproceedings{novelpositionalencodingstoenabletree,
  title = {Novel positional encodings to enable tree-based transformers},
  author = {Vighnesh Shiv and Chris Quirk},
  year = {2019},
  booktitle = {NeurIPS 2019 12},
  url = {http://papers.nips.cc/paper/9376-novel-positional-encodings-to-enable-tree-based-transformers},
}