To cite package ‘lgspline’ in publications use:

Davis M (2026). lgspline: Lagrangian Multiplier Smoothing Splines for Smooth Function Estimation. R package version 1.2.1, https://CRAN.R-project.org/package=lgspline.

Corresponding BibTeX entry:

  @Manual{,
    title = {lgspline: Lagrangian Multiplier Smoothing Splines for
      Smooth Function Estimation},
    author = {Matthew Davis},
    year = {2026},
    note = {R package version 1.2.1},
    url = {https://CRAN.R-project.org/package=lgspline},
  }