To cite package ‘gsrsb’ in publications use:

Gou J, Zhang F (2023). gsrsb: Group Sequential Refined Secondary Boundary. R package version 1.2.1, https://CRAN.R-project.org/package=gsrsb.

Corresponding BibTeX entry:

  @Manual{,
    title = {gsrsb: Group Sequential Refined Secondary Boundary},
    author = {Jiangtao Gou and Fengqing (Zoe) Zhang},
    year = {2023},
    note = {R package version 1.2.1},
    url = {https://CRAN.R-project.org/package=gsrsb},
  }