To cite pssmooth in publications use:

Juraska M (2026). pssmooth: Flexible and Efficient Evaluation of Principal Surrogates/Treatment Effect Modifiers. R package version 1.0.4, https://CRAN.R-project.org/package=pssmooth.

Corresponding BibTeX entry:

  @Manual{,
    title = {pssmooth: Flexible and Efficient Evaluation of Principal
      Surrogates/Treatment Effect Modifiers},
    author = {Michal Juraska},
    year = {2026},
    note = {R package version 1.0.4},
    url = {https://CRAN.R-project.org/package=pssmooth},
  }