%0 Journal Article %A A. S. Romanyuk %T Best Trigonometric and Bilinear Approximations of Classes of Functions of Several Variables %J Matematičeskie zametki %D 2013 %P 401-415 %V 94 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2013_94_3_a7/ %G ru %F MZM_2013_94_3_a7