To cite package ‘s2’ in publications use:

  Dunnington D, Pebesma E, Rubak E (2024). _s2: Spherical Geometry
  Operators Using the S2 Geometry Library_. R package version 1.1.7,
  <https://CRAN.R-project.org/package=s2>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {s2: Spherical Geometry Operators Using the S2 Geometry Library},
    author = {Dewey Dunnington and Edzer Pebesma and Ege Rubak},
    year = {2024},
    note = {R package version 1.1.7},
    url = {https://CRAN.R-project.org/package=s2},
  }