%0 Journal Article %A I. M. Ganzburg %T A generalization of some results obtained by S.\,M.~Nikolsky and A.\,F.~Timan %J Doklady Akademii Nauk %D 1957 %P 727-730 %V 116 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_116_5_a2/ %G ru %F DAN_1957_116_5_a2