@Article{ leorigvit, author = { Leonardi, Gian Paolo and Rigot, Severine and Vittone, Davide }, title = { Isodiametric sets in the Heisenberg group }, journal = { Rev. Mat. Iberoam. }, year = { 2012 }, doi = { 10.4171/RMI/700 }, volume = { 28 }, number = { 4 }, pages = { 999-1024 }, URL = { http://cvgmt.sns.it/paper/866/ }, note = { cvgmt preprint} }