To cite package ‘rjd3x13’ in publications use:

  Palate J, Quartier-la-Tente A, Barthelemy T, Smyk A (2026). _rjd3x13:
  Seasonal Adjustment with 'X-13' in 'JDemetra+' 3.x_. R package
  version 3.7.1, <https://CRAN.R-project.org/package=rjd3x13>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rjd3x13: Seasonal Adjustment with 'X-13' in 'JDemetra+' 3.x},
    author = {Jean Palate and Alain Quartier-la-Tente and Tanguy Barthelemy and Anna Smyk},
    year = {2026},
    note = {R package version 3.7.1},
    url = {https://CRAN.R-project.org/package=rjd3x13},
  }