@Misc{ 
  ArdLeDSac18,
  author = { Ardentov, Andrei and Le Donne, Enrico and Sachkov, Yuri },
  title = { Sub-Finsler geodesics on the Cartan group },
  journal = {  },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4143/ },
  note = { cvgmt preprint}
}