To cite package ‘smartsizer’ in publications use:

Artman W (2021). smartsizer: Power Analysis for a SMART Design. R package version 1.0.3, https://CRAN.R-project.org/package=smartsizer.

Corresponding BibTeX entry:

  @Manual{,
    title = {smartsizer: Power Analysis for a SMART Design},
    author = {William Artman},
    year = {2021},
    note = {R package version 1.0.3},
    url = {https://CRAN.R-project.org/package=smartsizer},
  }