@Misc{ 
  AmIkLuPa24,
  author = { Ambrosio, Luigi and Ikonen, Toni and Lučić, Danka and Pasqualetto, Enrico },
  title = { Metric Sobolev spaces I: equivalence of definitions },
  journal = {  },
  year = { 2024 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6545/ },
  note = { cvgmt preprint}
}