To cite package ‘caffsim’ in publications use:

Han S (2020). caffsim: Simulation of Plasma Caffeine Concentrations by Using Population Pharmacokinetic Model. R package version 0.2.4.9000, https://github.com/asancpt/caffsim.

Corresponding BibTeX entry:

  @Manual{,
    title = {caffsim: Simulation of Plasma Caffeine Concentrations by
      Using Population Pharmacokinetic Model},
    author = {Sungpil Han},
    year = {2020},
    note = {R package version 0.2.4.9000},
    url = {https://github.com/asancpt/caffsim},
  }