@Misc{ 
  RajStu12,
  author = { Rajala, Tapio and Sturm, Karl-Theodor },
  title = { Non-branching geodesics and optimal maps in strong $CD(K,\infty)$-spaces },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2012 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1889/ },
  note = { cvgmt preprint}
}