@Misc{ 
  DePFig16,
  author = { De Philippis, Guido and Figalli, Alessio },
  title = { Rigidity and stability of Caffarelli's log-concave perturbation theorem },
  journal = { Nonlinear Anal. },
  year = { 2016 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3066/ },
  note = { cvgmt preprint}
}