%0 Journal Article %A L. V. Zhizhiashvili %T A generalization of a theorem of M.~Riesz to the case of functions of several variables %J Matematičeskie zametki %D 1968 %P 269-280 %V 4 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1968_4_3_a2/ %G ru %F MZM_1968_4_3_a2