@Misc{ 
  DePFig14a,
  author = { De Philippis, Guido and Figalli, Alessio },
  title = { A note on the dimension of the singular set in free interface problems },
  journal = { Differential Integral Equations },
  year = { 2014 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2446/ },
  note = { cvgmt preprint}
}