To cite package ‘lillardhaz’ in publications use:

  Fukuda N (2026). _lillardhaz: Simultaneous-Equations Hazard/Probit
  Models with a Gaussian-Copula Correlation_. R package version 1.0.0,
  <https://CRAN.R-project.org/package=lillardhaz>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lillardhaz: Simultaneous-Equations Hazard/Probit Models with a
Gaussian-Copula Correlation},
    author = {Nobutaka Fukuda},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=lillardhaz},
  }