To cite package ‘smooth’ in publications use:

  Svetunkov I (2026). _smooth: Forecasting Using State Space Models_. R
  package version 4.5.0, <https://github.com/config-i1/smooth>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {smooth: Forecasting Using State Space Models},
    author = {Ivan Svetunkov},
    year = {2026},
    note = {R package version 4.5.0},
    url = {https://github.com/config-i1/smooth},
  }