To cite package ‘stlpro’ in publications use:

  Ollech D (2026). _stlpro: STL with Extended Capabilities_. R package
  version 0.1.0, <https://CRAN.R-project.org/package=stlpro>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {stlpro: STL with Extended Capabilities},
    author = {Daniel Ollech},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=stlpro},
  }