@Misc{ 
  Lam20,
  author = { Lamberti, Lorenzo },
  title = { A regularity result for minimal configurations of a free interface problem },
  journal = {  },
  year = { 2020 },
  pages = { 15 },
  URL = { http://cvgmt.sns.it/paper/5069/ },
  note = { cvgmt preprint}
}