To cite package ‘robustX’ in publications use:

  Maechler M, Stahel W (2026). _robustX: 'eXtra' / 'eXperimental'
  Functionality for Robust Statistics_. R package version 1.2-8,
  <https://r-forge.r-project.org/projects/robustbase>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {robustX: 'eXtra' / 'eXperimental' Functionality for Robust Statistics},
    author = {Martin Maechler and Werner A. Stahel},
    year = {2026},
    note = {R package version 1.2-8},
    url = {https://r-forge.r-project.org/projects/robustbase},
  }