To cite package ‘visor’ in publications use:

  Forgaci C, Nattino F (2025). _visor: Geospatial Tools for Visibility
  Analysis_. R package version 0.1.1,
  <https://github.com/cityriverspaces/visor>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {visor: Geospatial Tools for Visibility Analysis},
    author = {Claudiu Forgaci and Francesco Nattino},
    year = {2025},
    note = {R package version 0.1.1},
    url = {https://github.com/cityriverspaces/visor},
  }