To cite package ‘polypoly’ in publications use:

Mahr T (2022). polypoly: Helper Functions for Orthogonal Polynomials. R package version 0.0.3, https://github.com/tjmahr/polypoly.

Corresponding BibTeX entry:

  @Manual{,
    title = {polypoly: Helper Functions for Orthogonal Polynomials},
    author = {Tristan Mahr},
    year = {2022},
    note = {R package version 0.0.3},
    url = {https://github.com/tjmahr/polypoly},
  }