%0 Journal Article %A A. S. Romanyuk %T Approximation of Classes $B^r_{p,\theta}$ of Periodic Functions of One and Several Variables %J Matematičeskie zametki %D 2010 %P 429-442 %V 87 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2010_87_3_a10/ %G ru %F MZM_2010_87_3_a10