To cite package ‘Bessel’ in publications use:

Maechler M (2026). Bessel: Computations and Approximations for Bessel Functions. R package version 0.7-0, https://r-forge.r-project.org/projects/specfun.

Corresponding BibTeX entry:

  @Manual{,
    title = {Bessel: Computations and Approximations for Bessel
      Functions},
    author = {Martin Maechler},
    year = {2026},
    note = {R package version 0.7-0},
    url = {https://r-forge.r-project.org/projects/specfun},
  }