hal-00175487 title_s The periodic isoperimetric problem auteur Laurent Hauswirth, Joaquín Pérez, Pascal Romon, Antonio Ros journal Transactions of the American Mathematical Society volume 356 numero 5 pages 2025-2047 doi 10.1090/S0002-9947-03-03362-2 fichier_autre https://www.ams.org/tran/2004-356-05/S0002-9947-03-03362-2/S0002-9947-03-03362-… origine_autre openaccess annee 2003