To cite package ‘HDoutliers’ in publications use:

Fraley C (2022). HDoutliers: Leland Wilkinson's Algorithm for Detecting Multidimensional Outliers. R package version 1.0.4, https://CRAN.R-project.org/package=HDoutliers.

Corresponding BibTeX entry:

  @Manual{,
    title = {HDoutliers: Leland Wilkinson's Algorithm for Detecting
      Multidimensional Outliers},
    author = {Chris Fraley},
    year = {2022},
    note = {R package version 1.0.4},
    url = {https://CRAN.R-project.org/package=HDoutliers},
  }