%0 Journal Article %A D. V. Gorbachev %T An estimate of an optimal argument in the sharp multidimensional Jackson–Stechkin $L_2$-inequality %J Trudy Instituta matematiki i mehaniki %D 2014 %P 83-91 %V 20 %N 1 %U http://geodesic.mathdoc.fr/item/TIMM_2014_20_1_a7/ %G ru %F TIMM_2014_20_1_a7