To cite package ‘survmixer’ in publications use:

Bofill Roig M (2021). survmixer: Design of Clinical Trials with Survival Endpoints Based on Binary Responses. R package version 1.3, https://github.com/martabofillroig/survmixer.

Corresponding BibTeX entry:

  @Manual{,
    title = {survmixer: Design of Clinical Trials with Survival
      Endpoints Based on Binary Responses},
    author = {Marta {Bofill Roig}},
    year = {2021},
    note = {R package version 1.3},
    url = {https://github.com/martabofillroig/survmixer},
  }