@Misc{ HenLemLuc22, author = { Henrot, Antoine and Lemenant, Antoine and Lucardesi, Ilaria }, title = { An isoperimetric problem with two distinct solutions }, journal = { Transactions of the American Mathematical Society }, year = { 2023 }, pages = { }, URL = { http://cvgmt.sns.it/paper/5780/ }, note = { cvgmt preprint} }