To cite package ‘piiR’ in publications use:

  Wells KE (2025). _piiR: Predictive Information Index ('PII')_. R
  package version 0.3.0, <https://github.com/theotherdrwells/piir>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {piiR: Predictive Information Index ('PII')},
    author = {Kevin E. Wells},
    year = {2025},
    note = {R package version 0.3.0},
    url = {https://github.com/theotherdrwells/piir},
  }