Kindly cite the geofi R package as follows:

To cite package ‘geofi’ in publications use:

  (C) Markus Kainu, Joona Lehtomaki, Juuso Parkkinen, Jani Miettinen,
  Pyry Kantanen, Sampo Vesanen, Leo Lahti 2015-2023. geofi: Access
  Finnish Geospatial Data, <doi:10.5281/zenodo.7148138>

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {geofi: Access Finnish Geospatial Data},
    author = {Markus Kainu and Joona Lehtomaki and Juuso Parkkinen and Jani Miettinen and Pyry Kantanen and Sampo Vesanen and Leo Lahti},
    year = {2023},
    note = {R package version 1.0.8},
    url = {https://github.com/rOpenGov/geofi},
  }

Many thanks for all contributors! For more info, see:
https://github.com/rOpenGov/geofi