@Article{ 
  BarRiz15,
  author = { Barilari, Davide and Rizzi, Luca },
  title = { On Jacobi fields and a canonical connection in sub-Riemannian geometry },
  journal = { Archivum Mathematicum },
  year = { 2017 },
  doi = { 10.5817/AM2017-2-77 },
  volume = { 53 },
  number = { 2 },
  pages = { 77-92 },
  URL = { http://cvgmt.sns.it/paper/2712/ },
  note = { cvgmt preprint}
}