@Misc{ 
  BelCat20,
  author = { Belgiorno, Francesco and Catino, Giovanni },
  title = { A Weyl Entropy of Pure Spacetime Regions },
  journal = {  },
  year = { 2020 },
  pages = {  },
  URL = { https://gecogedi.dimai.unifi.it/paper/517/ },
  note = { cvgmt preprint}
}