@Misc{ 
  biacav09,
  author = { Bianchini, Stefano and Cavalletti, Fabio },
  title = { The Monge Problem For Distance Cost In Geodesic Spaces },
  journal = { Comm. Math. Phys. },
  year = { 2009 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/14/ },
  note = { cvgmt preprint}
}