@Misc{ 
  Fig18a,
  author = { Figalli, Alessio },
  title = { On the Continuity of Center-Outward Distribution and Quantile Functions },
  journal = { Nonlinear Anal. },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3874/ },
  note = { cvgmt preprint}
}