@Article{ 
  JulNicVit20,
  author = { Julia, Antoine and Nicolussi Golo, Sebastiano and Vittone, Davide },
  title = { Area of intrinsic graphs and coarea formula in Carnot Groups },
  journal = { Math. Z. },
  year = { 2022 },
  doi = { https://doi.org/10.1007/s00209-021-02916-2 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4635/ },
  note = { cvgmt preprint}
}