@Misc{ 
  Sav19,
  author = { Savaré, Giuseppe },
  title = { Sobolev spaces in extended metric-measure spaces },
  journal = {  },
  year = { 2019 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5042/ },
  note = { cvgmt preprint}
}