To cite package ‘hctrial’ in publications use:

Edelmann D (2018). hctrial: Using Historical Controls for Designing Phase II Clinical Trials. R package version 0.1.0, https://github.com/edelmand21/hctrial.

Corresponding BibTeX entry:

  @Manual{,
    title = {hctrial: Using Historical Controls for Designing Phase II
      Clinical Trials},
    author = {Dominic Edelmann},
    year = {2018},
    note = {R package version 0.1.0},
    url = {https://github.com/edelmand21/hctrial},
  }