To cite package ‘hydrochem’ in publications use:

  Cinkus G, Bondu R (2026). _hydrochem: Analysis and Visualization
  Tools for Hydrochemical Analysis_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=hydrochem>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {hydrochem: Analysis and Visualization Tools for Hydrochemical Analysis},
    author = {Guillaume Cinkus and Raphaël Bondu},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=hydrochem},
  }