To cite package ‘DEoptimR’ in publications use:

  Conceicao EL (2024). _DEoptimR: Differential Evolution Optimization
  in Pure R_. R package version 1.1-3-1,
  <https://CRAN.R-project.org/package=DEoptimR>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {DEoptimR: Differential Evolution Optimization in Pure R},
    author = {Eduardo L. T. Conceicao},
    year = {2024},
    note = {R package version 1.1-3-1},
    url = {https://CRAN.R-project.org/package=DEoptimR},
  }