%0 Journal Article %A V. I. Protasov %T On linear partial differential equations of infinite order with constant coefficients %J Doklady Akademii Nauk %D 1958 %P 594-597 %V 121 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_121_4_a5/ %G ru %F DAN_1958_121_4_a5