@Misc{ 
  GigRajStu13,
  author = { Gigli, Nicola and Rajala, Tapio and Sturm, Karl-Theodor },
  title = { Optimal maps and exponentiation on finite dimensional spaces with Ricci curvature bounded from below },
  journal = {  },
  year = { 2013 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2153/ },
  note = { cvgmt preprint}
}