%0 Journal Article
%A V. K. Ionin
%T Relations between the radii of the inscribed and circumscribed spheres of a closed, convex surface
%J Doklady Akademii Nauk
%D 1963
%P 268-270
%V 148
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_148_2_a6/
%G ru
%F DAN_1963_148_2_a6