@Article{ 
  gra04,
  author = { Granieri, Luca },
  title = { On Action Minimizing Measures for the Monge-Kantorovich Problem },
  journal = { NoDea },
  year = { 2007 },
  volume = { 14 },
  pages = { 125-152 },
  URL = { http://cvgmt.sns.it/paper/125/ },
  note = { cvgmt preprint}
}