To cite package ‘Riemann’ in publications use:

  You K (2024). _Riemann: Learning with Data on Riemannian Manifolds_.
  R package version 0.1.5, <https://github.com/kisungyou/riemann>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Riemann: Learning with Data on Riemannian Manifolds},
    author = {Kisung You},
    year = {2024},
    note = {R package version 0.1.5},
    url = {https://github.com/kisungyou/riemann},
  }