@Misc{ ciafusmag08, author = { Cianchi, Andrea and Fusco, Nicola and Maggi, Francesco and Pratelli, Aldo }, title = { On the isoperimetric deficit in the Gauss space }, journal = { American Journal of Mathematics }, year = { 2008 }, pages = { }, URL = { http://cvgmt.sns.it/paper/1587/ }, note = { cvgmt preprint} }