@Misc{ 
  Spe16,
  author = { Spector, Daniel },
  title = { A note on the sublinear Sobolev inequality },
  journal = {  },
  year = { 2016 },
  pages = { 5 pages },
  URL = { http://cvgmt.sns.it/paper/3041/ },
  note = { cvgmt preprint}
}