To cite package ‘Q2q’ in publications use:

  FLICI F (2024). _Q2q: Interpolating Age-Specific Mortality Rates at
  All Ages_. R package version 0.1.1,
  <https://github.com/farid-flici/q2q>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Q2q: Interpolating Age-Specific Mortality Rates at All Ages},
    author = {Farid FLICI},
    year = {2024},
    note = {R package version 0.1.1},
    url = {https://github.com/farid-flici/q2q},
  }