To cite package ‘rSDR’ in publications use:

  Chen S, Zhao S, Huang H (2025). _rSDR: Robust Sufficient Dimension
  Reduction_. R package version 1.0.3.0,
  <https://CRAN.R-project.org/package=rSDR>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rSDR: Robust Sufficient Dimension Reduction},
    author = {Sheau-Chiann Chen and Shilin Zhao and Hsin-Hsiung Bill Huang},
    year = {2025},
    note = {R package version 1.0.3.0},
    url = {https://CRAN.R-project.org/package=rSDR},
  }