To cite package ‘lokern’ in publications use:

  Herrmann E, Maechler M (2024). _lokern: Kernel Regression Smoothing
  with Local or Global Plug-in Bandwidth_. R package version 1.1-12, ,
  <https://r-forge.r-project.org/projects/curves-etc>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lokern: Kernel Regression Smoothing with Local or Global Plug-in
Bandwidth},
    author = {Eva Herrmann and Martin Maechler},
    year = {2024},
    note = {R package version 1.1-12, 
},
    url = {https://r-forge.r-project.org/projects/curves-etc},
  }