@Misc{ 
  SanWan15,
  author = { Santambrogio, Filippo and Wang, Xu-Jia },
  title = { Convexity of the support of the displacement interpolation: counterexamples },
  journal = { Appl. Math. Letters },
  year = { 2016 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2812/ },
  note = { cvgmt preprint}
}