%0 Journal Article %A È. M. Galeev %T Orders of the orthoprojection widths of classes of periodic functions of one and of several variables %J Matematičeskie zametki %D 1988 %P 197-211 %V 43 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1988_43_2_a4/ %G ru %F MZM_1988_43_2_a4