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, , . 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://github.com/r-spatial/s2}, }