@Misc{ 
  FusJul14,
  author = { Fusco, Nicola and Julin, Vesa },
  title = { On the regularity of critical and minimal sets of a free interface problem },
  journal = {  },
  year = { 2014 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2441/ },
  note = { cvgmt preprint}
}