%0 Journal Article %A A. Böttcher %T Two-dimensional convolutions in angular sectors with kernels having their supports in a half plane %J Matematičeskie zametki %D 1983 %P 207-218 %V 34 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1983_34_2_a6/ %G ru %F MZM_1983_34_2_a6