%0 Journal Article %A Eric L. Grinberg %T Isoperimetric inequalities and identifties for k-dimensional cross-sections of convex bodies. %J Mathematische Annalen %D 1991 %P 75-86 %V 291 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1991__291_1_164850/ %G en %F MAN_1991__291_1_164850