@Misc{ 
  ButCarLab17,
  author = { Buttazzo, Giuseppe and Carlier, Guillaume and Laborde, Maxime },
  title = { On the Wasserstein distance between mutually singular measures },
  journal = {  },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3508/ },
  note = { cvgmt preprint}
}