@Misc{ 
  DeL21,
  author = { De Lellis, Camillo },
  title = { The regularity theory for the area functional (in geometric measure theory) },
  journal = {  },
  year = { 2021 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5311/ },
  note = { cvgmt preprint}
}