To cite package ‘policytree’ in publications use:

Sverdrup E, Kanodia A, Zhou Z, Athey S, Wager S (2026). policytree: Policy Learning via Doubly Robust Empirical Welfare Maximization over Trees. R package version 1.2.4, https://CRAN.R-project.org/package=policytree.

Corresponding BibTeX entry:

  @Manual{,
    title = {policytree: Policy Learning via Doubly Robust Empirical
      Welfare Maximization over Trees},
    author = {Erik Sverdrup and Ayush Kanodia and Zhengyuan Zhou and
      Susan Athey and Stefan Wager},
    year = {2026},
    note = {R package version 1.2.4},
    url = {https://CRAN.R-project.org/package=policytree},
  }