@Misc{ 
  AmSoVeVi26,
  author = { Ambrosio, Luigi and Somma, Gianluca and Verzellesi, Simone and Vittone, Davide },
  title = { Renormalization of contact vector fields with horizontal Sobolev regularity in Heisenberg groups },
  journal = {  },
  year = { 2026 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/7537/ },
  note = { cvgmt preprint}
}