%0 Journal Article %A V. Ch. Kudaev %T Ranks of extrema and structural optimization %J News of the Kabardin-Balkar scientific center of RAS %D 2016 %P 15-24 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IZKAB_2016_4_a2/ %G ru %F IZKAB_2016_4_a2