To cite package ‘afmpar’ in publications use:

  Cheilaris P (2025). _afmpar: Check Validity of Greek AFM and PA
  Numbers_. R package version 0.2.0,
  <https://github.com/philaris/afmpar>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {afmpar: Check Validity of Greek AFM and PA Numbers},
    author = {Panagiotis Cheilaris},
    year = {2025},
    note = {R package version 0.2.0},
    url = {https://github.com/philaris/afmpar},
  }