To cite package ‘gpindex’ in publications use:

  Martin S (2024). _gpindex: Generalized Price and Quantity Indexes_.
  doi:10.5281/zenodo.10097742
  <https://doi.org/10.5281/zenodo.10097742>, R package version 0.6.2,
  <https://cran.r-project.org/package=gpindex>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{gpindex}: Generalized Price and Quantity Indexes},
    author = {Steve Martin},
    year = {2024},
    doi = {10.5281/zenodo.10097742},
    url = {https://cran.r-project.org/package=gpindex},
    note = {R package version 0.6.2},
  }