@Misc{ 
  GigMaa12,
  author = { Gigli, Nicola and Maas, Jan },
  title = { Gromov-Hausdorff convergence of discrete transportation metrics },
  journal = {  },
  year = { 2012 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1888/ },
  note = { cvgmt preprint}
}