To cite plantmix in publications use:

Flutre T, Enjalbert J, Forst E, Remerand M, Salomon J (????). “Genetic Study of Plant Mixtures with plantmix.” https://moulon.inrae.fr/logiciels/plantmix/.

Corresponding BibTeX entry:

  @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/},
  }