To cite package ‘ipf’ in publications use:

  Kenny C (2026). _ipf: Iterative Proportional Fitting_. R package
  version 0.0.1, <https://CRAN.R-project.org/package=ipf>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ipf: Iterative Proportional Fitting},
    author = {Christopher T. Kenny},
    year = {2026},
    note = {R package version 0.0.1},
    url = {https://CRAN.R-project.org/package=ipf},
  }