To cite the 'grpnet' package in publications, cite the JCGS paper and the current package version.

Helwig NE (2026). grpnet: Group Elastic Net Regularized GLMs and GAMs. doi:10.32614/CRAN.package.grpnet, R package version 1.1, https://CRAN.R-project.org/package=grpnet.

Helwig NE (2025). “Versatile descent algorithms for group regularization and variable selection in generalized linear models.” Journal of Computational and Graphical Statistics, 1(34), 239-252. doi:10.1080/10618600.2024.2362232.

Corresponding BibTeX entries:

  @Manual{,
    title = {grpnet: Group Elastic Net Regularized GLMs and GAMs},
    author = {Nathaniel E. Helwig},
    year = {2026},
    note = {R package version 1.1},
    url = {https://CRAN.R-project.org/package=grpnet},
    doi = {10.32614/CRAN.package.grpnet},
  }

  @Article{,
    title = {Versatile descent algorithms for group regularization and
      variable selection in generalized linear models},
    author = {Nathaniel E. Helwig},
    journal = {Journal of Computational and Graphical Statistics},
    year = {2025},
    number = {34},
    volume = {1},
    pages = {239-252},
    doi = {10.1080/10618600.2024.2362232},
  }