@Misc{ 
  HueTre17,
  author = { Huesmann, Martin and Trevisan, Dario },
  title = { A Benamou--Brenier formulation of martingale optimal transport },
  journal = {  },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3730/ },
  note = { cvgmt preprint}
}