@Misc{ 
  fig06a,
  author = { Figalli, Alessio },
  title = { The Monge problem on non-compact manifolds },
  journal = { Rend. Sem. Mat. Univ. Padova },
  year = { 2006 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1313/ },
  note = { cvgmt preprint}
}