@Misc{ 
  GolOtt17,
  author = { Goldman, Michael and Otto, Felix },
  title = { A variational proof of partial regularity for optimal transportation maps },
  journal = { Annales de l'ENS },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3391/ },
  note = { cvgmt preprint}
}