@Article{ 
  MieRiz20,
  author = { Mietton, Thomas and Rizzi, Luca },
  title = { Branching geodesics in sub-Riemannian geometry },
  journal = { Geom. Funct. Anal. },
  year = { 2020 },
  doi = { 10.1007/s00039-020-00539-z },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4587/ },
  note = { cvgmt preprint}
}