To cite package ‘locfit’ in publications use:

  Loader C (2025). _locfit: Local Regression, Likelihood and Density
  Estimation_. R package version 1.5-9.12,
  <https://CRAN.R-project.org/package=locfit>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {locfit: Local Regression, Likelihood and Density Estimation},
    author = {Catherine Loader},
    year = {2025},
    note = {R package version 1.5-9.12},
    url = {https://CRAN.R-project.org/package=locfit},
  }