%0 Journal Article %A S. Ya. Al'per %A I. Yu. Vinogradova %T On approximation in the mean on curves in the complex plane by %J Izvestiya. Mathematics %D 1970 %P 551-567 %V 4 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1970_4_3_a5/ %G en %F IM2_1970_4_3_a5