To cite geoparser in publications use:

Casajus Nicolas (2023). geoparser: An R package to detect country names in documents. R package version 0.1, https://github.com/frbcesab/geoparser.

Corresponding BibTeX entry:

  @Manual{,
    title = {geoparser: {An} {R} package to detect country names in
      documents},
    author = {{Casajus Nicolas}},
    year = {2023},
    note = {R package version 0.1},
    url = {https://github.com/frbcesab/geoparser},
  }