To cite package ‘survexp.fr’ in publications use:

  Varet H, Jais J (2025). _survexp.fr: Relative Survival, AER and SMR
  Based on French Death Rates_. R package version 1.2,
  <https://github.com/hvaret/survexp.fr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {survexp.fr: Relative Survival, AER and SMR Based on French Death Rates},
    author = {Hugo Varet and Jean-Philippe Jais},
    year = {2025},
    note = {R package version 1.2},
    url = {https://github.com/hvaret/survexp.fr},
  }