@Article{ figmagpra11, author = { Figalli, Alessio and Maggi, Francesco and Pratelli, Aldo }, title = { A Geometric Approach to Correlation Inequalities in the Plane }, journal = { Ann. Inst. Henri Poincaré Probab. Stat. }, year = { 2012 }, pages = { }, URL = { http://cvgmt.sns.it/paper/435/ }, note = { cvgmt preprint} }