%0 Journal Article
%A V. A. Toponogov
%T On convexity of Riemannian spaces of-positive curvature
%J Doklady Akademii Nauk
%D 1957
%P 674-676
%V 115
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1957_115_4_a10/
%G ru
%F DAN_1957_115_4_a10