To cite package ‘PKPDindex’ in publications use:

  Alabdulkarim N, Standing J (2026). _PKPDindex: Optimal PK/PD Index
  Finder_. R package version 0.2.1,
  <https://CRAN.R-project.org/package=PKPDindex>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {PKPDindex: Optimal PK/PD Index Finder},
    author = {Najla Alabdulkarim and Joseph F Standing},
    year = {2026},
    note = {R package version 0.2.1},
    url = {https://CRAN.R-project.org/package=PKPDindex},
  }