To cite package ‘sfsmisc’ in publications use:

  Maechler M (2024). _sfsmisc: Utilities from 'Seminar fuer Statistik'
  ETH Zurich_. R package version 1.1-20,
  <https://github.com/mmaechler/sfsmisc>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {sfsmisc: Utilities from 'Seminar fuer Statistik' ETH Zurich},
    author = {Martin Maechler},
    year = {2024},
    note = {R package version 1.1-20},
    url = {https://github.com/mmaechler/sfsmisc},
  }