@Misc{ 
  Ger17,
  author = { Geraci, Francesco },
  title = { An epiperimetric inequality for the lower dimensional obstacle problem },
  journal = {  },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3569/ },
  note = { cvgmt preprint}
}