@Misc{ 
  cav11,
  author = { Cavalletti, Fabio },
  title = { The Monge problem in Wiener space },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2011 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/639/ },
  note = { cvgmt preprint}
}