To cite package ‘FastSurvival’ in publications use:

  Homma G (2026). _FastSurvival: Fast Kaplan-Meier, Log-Rank, and
  Hazard Ratio Estimation for Survival Analysis_. R package version
  0.1.0, <https://CRAN.R-project.org/package=FastSurvival>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {FastSurvival: Fast Kaplan-Meier, Log-Rank, and Hazard Ratio Estimation for
Survival Analysis},
    author = {Gosuke Homma},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=FastSurvival},
  }