To cite package ‘sundials’ in publications use:

Krämer K, SUNDIALS contributors (2026). sundials: Vendored 'SUNDIALS' Solver Suite for Linking by Other Packages. R package version 7.9.0-1, https://CRAN.R-project.org/package=sundials.

Corresponding BibTeX entry:

  @Manual{,
    title = {sundials: Vendored 'SUNDIALS' Solver Suite for Linking by
      Other Packages},
    author = {Konrad Krämer and {SUNDIALS contributors}},
    year = {2026},
    note = {R package version 7.9.0-1},
    url = {https://CRAN.R-project.org/package=sundials},
  }