%0 Journal Article %T Characterizations of Extremals for some Functionals on Convex Bodies %J Canadian journal of mathematics %D 2010 %P 1404-1418 %V 62 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2010-062-2/ %R 10.4153/CJM-2010-062-2 %F 10_4153_CJM_2010_062_2