To cite the posterior R package:

Bürkner P, Gabry J, Kay M, Vehtari A (2023). “posterior: Tools for Working with Posterior Distributions.” R package version 1.5.0, https://mc-stan.org/posterior/.

To cite the MCMC convergence diagnostics:

Vehtari A, Gelman A, Simpson D, Carpenter B, Bürkner P (2021). “Rank-normalization, folding, and localization: An improved Rhat for assessing convergence of MCMC (with discussion).” Bayesian Analysis.

Corresponding BibTeX entries:

  @Misc{,
    title = {posterior: Tools for Working with Posterior
      Distributions},
    author = {Paul-Christian Bürkner and Jonah Gabry and Matthew Kay
      and Aki Vehtari},
    year = {2023},
    note = {R package version 1.5.0},
    url = {https://mc-stan.org/posterior/},
  }

  @Article{,
    title = {Rank-normalization, folding, and localization: An improved
      Rhat for assessing convergence of MCMC (with discussion)},
    author = {Aki Vehtari and Andrew Gelman and Daniel Simpson and Bob
      Carpenter and Paul-Christian Bürkner},
    year = {2021},
    journal = {Bayesian Analysis},
  }