To cite package ‘GPCMlasso’ in publications use:

  Schauberger G (2026). _GPCMlasso: Regularized Explanatory Generalized
  Partial Credit Models_. R package version 0.2-0,
  <https://CRAN.R-project.org/package=GPCMlasso>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {GPCMlasso: Regularized Explanatory Generalized Partial Credit Models},
    author = {Gunther Schauberger},
    year = {2026},
    note = {R package version 0.2-0},
    url = {https://CRAN.R-project.org/package=GPCMlasso},
  }
