%0 Journal Article %A V. K. Ionin %T Riemannian spaces with Euclidean isoperimetric inequality %J Doklady Akademii Nauk %D 1969 %P 990-992 %V 188 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_188_5_a6/ %G ru %F DAN_1969_188_5_a6