To cite package ‘lsoda’ in publications use:

  Clements M (2026). _lsoda: 'C++' Header Library for Ordinary
  Differential Equations_. R package version 1.2,
  <https://github.com/mclements/lsoda>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lsoda: 'C++' Header Library for Ordinary Differential Equations},
    author = {Mark Clements},
    year = {2026},
    note = {R package version 1.2},
    url = {https://github.com/mclements/lsoda},
  }