To cite the ConstrainedQuantileSplines package in publications, please use:

Abbes A (2026). R code for Quantile Regression with Bspline under Shape Constraints. R package version 0.1.0, https://github.com/alexandreabbes/BsplineQuantReg.

Abbes A (2025). “Quantile regression with cubic polynomial splines under shape constraints with applications.” zenodo. doi:10.5281/zenodo.17427913. https://doi.org/10.5281/zenodo.17427913.

Abbes A (2026). Python code for quantile regression with polynomial splines under shape constraints.. Python version code of the R package BsplineQuantReg, with nice tk interface, and multiple constraints, https://github.com/alexandreabbes/Constrained-Quantile-Regression-with-cubic-splines.

Corresponding BibTeX entries:

  @Manual{,
    title = {R code for Quantile Regression with Bspline under Shape
      Constraints},
    author = {Alexandre Abbes},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/alexandreabbes/BsplineQuantReg},
  }

  @Article{,
    journal = {zenodo},
    title = {Quantile regression with cubic polynomial splines under
      shape constraints with applications},
    author = {Alexandre Abbes},
    year = {2025},
    doi = {10.5281/zenodo.17427913},
    url = {https://doi.org/10.5281/zenodo.17427913},
  }

  @Manual{,
    title = {Python code for quantile regression with polynomial
      splines under shape constraints.},
    author = {Alexandre Abbes},
    year = {2026},
    note = {Python version code of the R package BsplineQuantReg, with
      nice tk interface, and multiple constraints},
    url =
      {https://github.com/alexandreabbes/Constrained-Quantile-Regression-with-cubic-splines},
  }