To cite package ‘gestate’ in publications use:

Bell J (2023). gestate: Generalised Survival Trial Assessment Tool Environment. R package version 1.6.0, https://CRAN.R-project.org/package=gestate.

Corresponding BibTeX entry:

  @Manual{,
    title = {gestate: Generalised Survival Trial Assessment Tool
      Environment},
    author = {James Bell},
    year = {2023},
    note = {R package version 1.6.0},
    url = {https://CRAN.R-project.org/package=gestate},
  }