@Misc{ 
  BenCarNen17,
  author = { Benamou, Jean-David and Carlier, Guillaume and Nenna, Luca },
  title = { Generalized incompressible flows, multi-marginal transport and Sinkhorn algorithm },
  journal = { Numerische Mathematik },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3645/ },
  note = { cvgmt preprint}
}