To cite package ‘pfm’ in publications use:

  Johannes Ranke (2025). _pfm: Utilities for Pesticide Fate Modelling_.
  R package version 0.6.4, , <https://github.com/jranke/pfm>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pfm: Utilities for Pesticide Fate Modelling},
    author = {{Johannes Ranke}},
    year = {2025},
    note = {R package version 0.6.4, },
    url = {https://github.com/jranke/pfm},
  }