@Misc{ 
  figrifvil10,
  author = { Figalli, Alessio and Rifford, Ludovic and Villani, Cédric },
  title = { Nearly round spheres look convex },
  journal = { Amer. J. Math. },
  year = { 2011 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/689/ },
  note = { cvgmt preprint}
}