To cite package ‘gcpca’ in publications use:

  de Oliveira E (2026). _gcpca: Generalized Contrastive Principal
  Component Analysis_. R package version 0.0.1,
  <https://CRAN.R-project.org/package=gcpca>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gcpca: Generalized Contrastive Principal Component Analysis},
    author = {Eliezyer {de Oliveira}},
    year = {2026},
    note = {R package version 0.0.1},
    url = {https://CRAN.R-project.org/package=gcpca},
  }