@Misc{ 
  Han20,
  author = { Han, Bangxian },
  title = { Rigidity of some functional  inequalities on ${\rm RCD}$ spaces },
  journal = {  },
  year = { 2020 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4564/ },
  note = { cvgmt preprint}
}