To cite the RoBTT package in publications use:

  Bartoš F, Maier M, Godmann H (2022). “RoBTT: An R Package for Robust
  Bayesian T-Test.” R package version 1.3.1,
  <https://CRAN.R-project.org/package=RoBTT>.

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {RoBTT: An R Package for Robust Bayesian T-Test},
    author = {František Bartoš and Maximilian Maier and Henrik R Godmann},
    year = {2022},
    note = {R package version 1.3.1},
    url = {https://CRAN.R-project.org/package=RoBTT},
  }