@Article{ 
  MagTre16,
  author = { Magnani, Valentino and Trevisan, Dario },
  title = { On Lipschitz vector fields and the Cauchy problem in homogeneous groups },
  journal = { Commun. Contemp. Math. },
  year = { 2018 },
  volume = { 20 },
  number = { 5 },
  pages = { 21 },
  URL = { http://cvgmt.sns.it/paper/3092/ },
  note = { cvgmt preprint}
}