%0 Journal Article %A K. A. Bzheumikhov %A Z. Ch. Margushev %A Yu. V. Savoiskii %A E. N. Makarov %T Efficiency of spectral transformation %J News of the Kabardin-Balkar scientific center of RAS %D 2013 %P 13-20 %N 6-1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IZKAB_2013_6-1_a1/ %G ru %F IZKAB_2013_6-1_a1