%0 Journal Article %A A. P. Soldatov %T A certain problem of the theory of functions %J Differencialʹnye uravneniâ %D 1973 %P 325-332 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_2_a14/ %G ru %F DE_1973_9_2_a14