@Misc{ 
  PinOrpFäs20,
  author = { Fässler, Katrin and Orponen, Tuomas and Pinamonti, Andrea },
  title = { Planar incidences and geometric inequalities in the Heisenberg group },
  journal = {  },
  year = { 2020 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4607/ },
  note = { cvgmt preprint}
}