@Misc{ 
  CasFloSer24,
  author = { Caselli, Michele and Florit-Simon, Enric and Serra, Joaquim },
  title = { Fractional Sobolev spaces on Riemannian manifolds },
  journal = {  },
  year = { 2024 },
  pages = { 42 },
  URL = { http://cvgmt.sns.it/paper/6398/ },
  note = { cvgmt preprint}
}