@Article{ 
  MaiVec19,
  author = { Maione, Alberto and Vecchi, Eugenio },
  title = { Integral representation of local left--invariant functionals in Carnot  groups },
  journal = { Analysis and Geometry in Metric Spaces },
  year = { 2020 },
  doi = { 10.1515/agms-2020-0001 },
  volume = { 8 },
  number = { 1 },
  pages = { 1-14 },
  URL = { http://cvgmt.sns.it/paper/4547/ },
  note = { cvgmt preprint}
}