@article{parsingwithtracesanon4algorithmanda1,
  title = {Parsing with Traces: An $O(n^4)$ Algorithm and a Structural Representation},
  author = {Jonathan K. Kummerfeld and Dan Klein},
  year = {2017},
  eprint = {1707.04221},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1707.04221v1},
}