%0 Journal Article %A V. I. Kononenko %T An $n$th order ordinary differential equation in a linear topological space %J Differencialʹnye uravneniâ %D 1974 %P 1727-1729 %V 10 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1974_10_9_a19/ %G ru %F DE_1974_10_9_a19