To cite PDRobust and its methodological background use:

  Wang H, Zhang Y (2026). _PDRobust: Robust Longitudinal Effects Under
  Truncation by Death_. R package version 0.3.8,
  <https://github.com/whhuan/PD_Robust>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {PDRobust: Robust Longitudinal Effects Under Truncation by Death},
    author = {Huan Wang and Yilin Zhang},
    year = {2026},
    note = {R package version 0.3.8},
    url = {https://github.com/whhuan/PD_Robust},
  }

  Zhang Y, Shardell M, Falvey J, McCoy R, Stuart E, Chen C (2026). “A
  Novel Tool for Evaluating Effect Modification in Older Adults with
  ADRD Using Medicare Claims.” doi:10.48550/arXiv.2608.06654
  <https://doi.org/10.48550/arXiv.2608.06654>. arXiv preprint
  arXiv:2608.06654.

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {A Novel Tool for Evaluating Effect Modification in Older Adults with ADRD Using Medicare Claims},
    author = {Yilin Zhang and Michelle Shardell and Jason Falvey and Rozalina McCoy and Elizabeth Stuart and Chixiang Chen},
    year = {2026},
    note = {arXiv preprint arXiv:2608.06654},
    doi = {10.48550/arXiv.2608.06654},
  }