To cite package ‘VGAMextra’ in publications use:

Miranda V (2025). VGAMextra: Additions and Extensions of the 'VGAM' Package. R package version 0.0-9, https://CRAN.R-project.org/package=VGAMextra.

Corresponding BibTeX entry:

  @Manual{,
    title = {VGAMextra: Additions and Extensions of the 'VGAM'
      Package},
    author = {Victor Miranda},
    year = {2025},
    note = {R package version 0.0-9},
    url = {https://CRAN.R-project.org/package=VGAMextra},
  }