@Misc{ 
  Sk22,
  author = { Sk, Firoj },
  title = { Characterization of fractional Sobolev--Poincaré and (localized)  Hardy inequalities },
  journal = { Journal of Geometric Analysis },
  year = { 2023 },
  pages = { 18 },
  URL = { http://cvgmt.sns.it/paper/5739/ },
  note = { cvgmt preprint}
}