@Misc{ 
  LeDMoi20,
  author = { Le Donne, Enrico and Moisala, Terhi },
  title = { Semigenerated step-3 Carnot algebras and applications to sub-Riemannian  perimeter },
  journal = {  },
  year = { 2020 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4681/ },
  note = { cvgmt preprint}
}