To cite package ‘penAFT’ in publications use:

  Molstad A, Suder P (2024). _penAFT: Fit the Semiparameteric
  Accelerated Failure Time Model with Elastic Net and Sparse Group
  Lasso Penalties_. R package version 0.3.2,
  <https://github.com/ajmolstad/penaft>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {penAFT: Fit the Semiparameteric Accelerated Failure Time Model with
Elastic Net and Sparse Group Lasso Penalties},
    author = {Aaron J. Molstad and Piotr M. Suder},
    year = {2024},
    note = {R package version 0.3.2},
    url = {https://github.com/ajmolstad/penaft},
  }