@Article{ 
  BilGhiHei13,
  author = { Biliotti,  Leonardo and Ghigi, Alessandro and Heinzner, Peter },
  title = { Polar orbitopes },
  journal = { Comm. Anal. Geom. },
  year = { 2013 },
  doi = { 10.4310/CAG.2013.v21.n3.a5 },
  volume = { 21 },
  number = { 3 },
  pages = { 579-606 },
  URL = { https://gecogedi.dimai.unifi.it/paper/15/ },
  note = { cvgmt preprint}
}