To cite package ‘timeperiodsR’ in publications use:

  Seleznev A (2026). _timeperiodsR: Simple Definition Of Time
  Intervals_. R package version 0.7.7,
  <https://CRAN.R-project.org/package=timeperiodsR>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {timeperiodsR: Simple Definition Of Time Intervals},
    author = {Alexey Seleznev},
    year = {2026},
    note = {R package version 0.7.7},
    url = {https://CRAN.R-project.org/package=timeperiodsR},
  }