@Article{ 
  NobVio21,
  author = { Nobili, Francesco and Violo, Ivan Yuri },
  title = { Rigidity and almost rigidity of Sobolev inequalities on compact spaces  with lower Ricci curvature bounds },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2022 },
  doi = { https://doi.org/10.1007/s00526-022-02284-7 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5221/ },
  note = { cvgmt preprint}
}