@Misc{ 
  LiSanWan16,
  author = { Li, Qi-Rui and Santambrogio, Filippo and Wang, Xu-Jia },
  title = { Continuity for the Monge mass transfer problem in two dimensions },
  journal = { Arch. Rati. Mech. An. },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3219/ },
  note = { cvgmt preprint}
}