To cite package ‘sharpPen’ in publications use:

Braun W, Wang D, Hu X (2025). sharpPen: Penalized Data Sharpening for Local Polynomial Regression. R package version 2.0, https://CRAN.R-project.org/package=sharpPen.

Corresponding BibTeX entry:

  @Manual{,
    title = {sharpPen: Penalized Data Sharpening for Local Polynomial
      Regression},
    author = {W.J. Braun and D. Wang and X.J. Hu},
    year = {2025},
    note = {R package version 2.0},
    url = {https://CRAN.R-project.org/package=sharpPen},
  }