%0 Journal Article %A O. V. Epifanov %T A criterion for a convolution to be epimorphic in arbitrary regions of the complex plane %J Matematičeskie zametki %D 1982 %P 695-705 %V 31 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1982_31_5_a3/ %G ru %F MZM_1982_31_5_a3