%0 Journal Article %A V. N. Temlyakov %T Approximation of functions with a~bounded mixed difference by trigonometric polynomials, and the widths of some classes of functions %J Izvestiya. Mathematics %D 1983 %P 173-187 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1983_20_1_a10/ %G en %F IM2_1983_20_1_a10