To cite plantmix in publications use:

  Flutre T et al. (2026). Genetic Study of Plant Mixtures with
  plantmix. URL https://moulon.inrae.fr/logiciels/plantmix/

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {Genetic Study of Plant Mixtures with {plantmix}},
    author = {Timothee Flutre and Jerome Enjalbert and Emma Forst and Maxence Remerand and Jemay Salomon},
    url = {https://moulon.inrae.fr/logiciels/plantmix/},
  }