@Article{ 
  FraPraSte21a,
  author = { Franceschi, Valentina and Pratelli, Aldo and Stefani, Giorgio },
  title = { On the Steiner property for planar minimizing clusters. The anisotropic case. },
  journal = { J. Éc. polytech. Math. },
  year = { 2023 },
  doi = { https://doi.org/10.5802/jep.238 },
  volume = { 10 },
  pages = { 989--1045 },
  URL = { http://cvgmt.sns.it/paper/5165/ },
  note = { cvgmt preprint}
}