To cite package ‘hans’ in publications use:

Hallam A (2019). hans: Haversines are not Slow. R package version 0.1, https://CRAN.R-project.org/package=hans.

Corresponding BibTeX entry:

  @Manual{,
    title = {hans: Haversines are not Slow},
    author = {Alex Hallam},
    year = {2019},
    note = {R package version 0.1},
    url = {https://CRAN.R-project.org/package=hans},
  }