To cite package ‘bbssr’ in publications use:

  Homma G (2025). _bbssr: Blinded Sample Size Re-Estimation for Binary
  Endpoints_. R package version 1.0.2,
  <https://github.com/gosukehommaex/bbssr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {bbssr: Blinded Sample Size Re-Estimation for Binary Endpoints},
    author = {Gosuke Homma},
    year = {2025},
    note = {R package version 1.0.2},
    url = {https://github.com/gosukehommaex/bbssr},
  }