To cite package ‘sumR’ in publications use:

  A. Moreira G (2026). _sumR: Approximate Summation of Series_. R
  package version 0.4.16,
  <https://github.com/cranhaven/cranhaven.r-universe.dev>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {sumR: Approximate Summation of Series},
    author = {Guido {A. Moreira}},
    year = {2026},
    note = {R package version 0.4.16},
    url = {https://github.com/cranhaven/cranhaven.r-universe.dev},
  }