new_licata_ahmed_2019:
  type: article
  title: Gradual Type Theory
  author:
  - New, Max S.
  - Licata, Daniel R.
  - Ahmed, Amal
  date: 2019
  page-range: 1-31
  url: https://arxiv.org/abs/1811.02440
  serial-number:
    doi: 10.1145/3290328
  parent:
    type: periodical
    title: Proceedings of the ACM on Programming Languages
    publisher: ACM
    issue: POPL
    volume: 3