@Misc{ 
  DiD21,
  author = { Di Donato, Daniela },
  title = { Intrinsic Lipschitz maps vs. Lagrangian type solutions in Carnot groups
  of step 2 },
  journal = {  },
  year = { 2021 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5251/ },
  note = { cvgmt preprint}
}