%0 Journal Article
%A L. G. Tonoyan
%T On the some extremal problem
%J Proceedings of the Yerevan State University. Physical and mathematical sciences
%D 2002
%P 7-11
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZERU_2002_3_a1/
%G ru
%F UZERU_2002_3_a1