%0 Journal Article %A A. I. Stepanets %T Suprema of Fourier coefficients on classes of continuous and differentiable functions of several variables %J Izvestiya. Mathematics %D 1983 %P 611-624 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1983_20_3_a8/ %G en %F IM2_1983_20_3_a8