@Misc{ 
  FraMonMon16,
  author = { Franceschi, Valentina and Montefalcone, Francescopaolo and Monti, Roberto },
  title = { CMC spheres in the Heisenberg group },
  journal = { Analysis and Geometry in Metric Spaces },
  year = { 2019 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3242/ },
  note = { cvgmt preprint}
}