To cite rfastlowess in publications use:

  Valizadeh A (2026). _High-Performance LOWESS Smoothing for R_. R
  package version 1.3.0,
  <https://github.com/thisisamirv/lowess-project>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {High-Performance LOWESS Smoothing for R},
    author = {Amir Valizadeh},
    year = {2026},
    note = {R package version 1.3.0},
    url = {https://github.com/thisisamirv/lowess-project},
  }

  Cleveland W (1979). “Robust Locally Weighted Regression and Smoothing
  Scatterplots.” _Journal of the American Statistical Association_,
  *74*(368), 829-836. doi:10.1080/01621459.1979.10481038
  <https://doi.org/10.1080/01621459.1979.10481038>.

A BibTeX entry for LaTeX users is

  @Article{Cleveland1979,
    title = {Robust Locally Weighted Regression and Smoothing Scatterplots},
    author = {William S. Cleveland},
    journal = {Journal of the American Statistical Association},
    year = {1979},
    volume = {74},
    number = {368},
    pages = {829-836},
    doi = {10.1080/01621459.1979.10481038},
  }