@Misc{ 
  DiMVit25,
  author = { Di Marco, Marco and Vittone, Davide },
  title = { Submanifolds with boundary in sub-Riemannian Heisenberg Groups },
  journal = {  },
  year = { 2025 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/7266/ },
  note = { cvgmt preprint}
}