To cite package ‘DPQmpfr’ in publications use:

  Maechler M (2024). _DPQmpfr: DPQ (Density, Probability, Quantile)
  Distribution Computations using MPFR_. R package version 0.3-3, ,
  <https://r-forge.r-project.org/projects/specfun>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {DPQmpfr: DPQ (Density, Probability, Quantile) Distribution Computations
using MPFR},
    author = {Martin Maechler},
    year = {2024},
    note = {R package version 0.3-3, 
},
    url = {https://r-forge.r-project.org/projects/specfun},
  }