%0 Journal Article %A Yu. A. Bykadorov %T Normal solvability of integro-differential operators %J Differencialʹnye uravneniâ %D 1980 %P 1122-1125 %V 16 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_6_a14/ %G ru %F DE_1980_16_6_a14