To cite package ‘serp’ in publications use:

  Ugba E (2024). _serp: Smooth Effects on Response Penalty for CLM_. R
  package version 0.2.5, <https://CRAN.R-project.org/package=serp>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {serp: Smooth Effects on Response Penalty for CLM},
    author = {Ejike R. Ugba},
    year = {2024},
    note = {R package version 0.2.5},
    url = {https://CRAN.R-project.org/package=serp},
  }