@Article{ 
  Bon12,
  author = { Bonnotte, Nicolas },
  title = { From Knothe's Rearrangement to Brenier's Optimal Transport Map },
  journal = { SIAM J. Math. Anal. },
  year = { 2013 },
  doi = { 10.1137/120874850 },
  volume = { 45 },
  number = { 1 },
  pages = { 64–87 },
  URL = { http://cvgmt.sns.it/paper/1833/ },
  note = { cvgmt preprint}
}