To cite package ‘gkrreg’ in publications use:

  de Andrade Lima Neto E, Rodrigo Portela Ferreira M (2026). _gkrreg:
  Gaussian Kernel Robust Regression (GKRReg)_. R package version 0.4.0,
  <https://github.com/marcelorpf/gkrreg>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gkrreg: Gaussian Kernel Robust Regression (GKRReg)},
    author = {Eufrásio {de Andrade Lima Neto} and Marcelo {Rodrigo Portela Ferreira}},
    year = {2026},
    note = {R package version 0.4.0},
    url = {https://github.com/marcelorpf/gkrreg},
  }