To cite package ‘ecipex’ in publications use:

Ipsen A (2025). ecipex: Efficient Calculation of Fine Structure Isotope Patterns via Fourier Transforms of Simplex-Based Elemental Models. R package version 1.1.1, https://CRAN.R-project.org/package=ecipex.

Corresponding BibTeX entry:

  @Manual{,
    title = {ecipex: Efficient Calculation of Fine Structure Isotope
      Patterns via Fourier Transforms of Simplex-Based Elemental
      Models},
    author = {Andreas Ipsen},
    year = {2025},
    note = {R package version 1.1.1},
    url = {https://CRAN.R-project.org/package=ecipex},
  }