cfcompare is an unofficial implementation. Please cite the TROP paper:

  Athey S, Imbens G, Qu Z, Viviano D (2026). “Triply Robust Panel
  Estimators.” _Journal of Applied Econometrics_, 1-16.
  doi:10.1002/jae.70061 <https://doi.org/10.1002/jae.70061>.
  Working-paper version: arXiv:2508.21536.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Triply Robust Panel Estimators},
    author = {Susan Athey and Guido W. Imbens and Zhaonan Qu and Davide Viviano},
    journal = {Journal of Applied Econometrics},
    year = {2026},
    pages = {1--16},
    doi = {10.1002/jae.70061},
    note = {Working-paper version: arXiv:2508.21536},
  }

  Iwasaki T (2026). _cfcompare: Compare DID, SDID, Matrix Completion
  and the Triply Robust Panel Estimator_. Unofficial R package version
  0.1.0; not affiliated with the TROP authors,
  <https://takuma1102.github.io/>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {cfcompare: Compare DID, SDID, Matrix Completion and the Triply Robust Panel Estimator},
    author = {Takuma Iwasaki},
    year = {2026},
    note = {Unofficial R package version 0.1.0; not affiliated with the TROP authors},
    url = {https://takuma1102.github.io/},
  }