@Misc{ 
  Her17,
  author = { Hernandez, Felipe },
  title = { Properties of a Hilbertian Norm for Perimeter },
  journal = {  },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3612/ },
  note = { cvgmt preprint}
}