To cite lmmix in publications, use:

  Nicosia A (2026). _lmmix: Linear Mixed Models with Correlated
  Residuals_. R package version 0.4.0,
  <https://github.com/AurelienNicosiaULaval/lmmix>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lmmix: Linear Mixed Models with Correlated Residuals},
    author = {Aurélien Nicosia},
    year = {2026},
    note = {R package version 0.4.0},
    url = {https://github.com/AurelienNicosiaULaval/lmmix},
  }