To cite package ‘lgspline’ in publications use:

  Davis M (2026). _lgspline: Lagrangian Multiplier Smoothing Splines
  for Smooth Function Estimation_. R package version 1.1.0,
  <https://github.com/matthewlouisdavisbiostat/lgspline>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lgspline: Lagrangian Multiplier Smoothing Splines for Smooth Function
Estimation},
    author = {Matthew Davis},
    year = {2026},
    note = {R package version 1.1.0},
    url = {https://github.com/matthewlouisdavisbiostat/lgspline},
  }