To cite package ‘plgraphics’ in publications use:

Stahel W (2025). plgraphics: User Oriented Plotting Functions. R package version 1.4, https://r-forge.r-project.org/projects/regdevelop.

Corresponding BibTeX entry:

  @Manual{,
    title = {plgraphics: User Oriented Plotting Functions},
    author = {Werner A. Stahel},
    year = {2025},
    note = {R package version 1.4},
    url = {https://r-forge.r-project.org/projects/regdevelop},
  }