To cite package ‘Ropj’ in publications use:

  Garriga M, Gerlach S, Vasilief I, Kargovsky A (2025). _Ropj: Import
  Origin(R) Project Files_. R package version 0.3-6,
  <https://CRAN.R-project.org/package=Ropj>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Ropj: Import Origin(R) Project Files},
    author = {Miquel Garriga and Stefan Gerlach and Ion Vasilief and Alex Kargovsky},
    year = {2025},
    note = {R package version 0.3-6},
    url = {https://CRAN.R-project.org/package=Ropj},
  }