@Article{ 
  BosNeeRiz15,
  author = { Boscain, Ugo and Neel, Robert and Rizzi, Luca },
  title = { Intrinsic random walks and sub-Laplacians in sub-Riemannian geometry },
  journal = { Adv. Math. },
  year = { 2017 },
  doi = { 10.1016/j.aim.2017.04.024 },
  volume = { 314 },
  pages = { 124-184 },
  URL = { http://cvgmt.sns.it/paper/2927/ },
  note = { cvgmt preprint}
}