@Article{ 
  LerAgrGen15,
  author = { Agrachev, Andrei and Gentile, Alessandro and Lerario, Antonio },
  title = { Geodesics and horizontal path spaces in Carnot groups },
  journal = { Geometry & Topology },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2882/ },
  note = { cvgmt preprint}
}