@Article{ cicleo10a, author = { Cicalese, Marco and Leonardi, Gian Paolo }, title = { Best constants for the isoperimetric inequality in quantitative form }, journal = { J. Eur. Math. Soc. (JEMS) }, year = { 2013 }, volume = { 15 }, number = { 3 }, pages = { 1101-1129 }, URL = { http://cvgmt.sns.it/paper/1296/ }, note = { cvgmt preprint} }