%0 Journal Article %A Tuan Le %T A Further Investigation on an Inequality of Root %J Matematičeskoe obrazovanie %D 2010 %P 17-23 %V 53 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MO_2010_53_1_a3/ %G ru %F MO_2010_53_1_a3