To cite package ‘HeckmanStan’ in publications use:

  Lim H, Lachos V, Lachos V (2025). _HeckmanStan: Heckman Selection
  Models Based on Bayesian Analysis_. R package version 1.0.0,
  <https://CRAN.R-project.org/package=HeckmanStan>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {HeckmanStan: Heckman Selection Models Based on Bayesian Analysis},
    author = {Heeju Lim and Victor E. Lachos and Victor H. Lachos},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=HeckmanStan},
  }