@Misc{ HenLuc20a, author = { Henrot, Antoine and Lucardesi, Ilaria }, title = { A Blaschke-Lebesgue theorem for the Cheeger constant }, journal = { Communications in Contemporary Mathematics }, year = { 2023 }, pages = { }, URL = { http://cvgmt.sns.it/paper/4886/ }, note = { cvgmt preprint} }