%0 Journal Article
%A V. G. Vizing
%T On the number of edges in a graph with a given radius
%J Doklady Akademii Nauk
%D 1967
%P 1245-1246
%V 173
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1967_173_6_a2/
%G ru
%F DAN_1967_173_6_a2