@Misc{ 
  DeMaMaSu20,
  author = { De Philippis, Guido and Marini, Michele and Mazzucchelli, Marco and Suhr, Stefan },
  title = { Closed geodesics on reversible Finsler 2-spheres },
  journal = {  },
  year = { 2020 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4571/ },
  note = { cvgmt preprint}
}