To cite package ‘proton’ in publications use:

Biecek P (2015). proton: The Proton Game. R package version 1.0, https://CRAN.R-project.org/package=proton.

Corresponding BibTeX entry:

  @Manual{,
    title = {proton: The Proton Game},
    author = {Przemysław Biecek},
    year = {2015},
    note = {R package version 1.0},
    url = {https://CRAN.R-project.org/package=proton},
  }