%0 Journal Article %A V. S. Sergeev %T Instability of the zero solution of a class of integro-differential equations %J Differencialʹnye uravneniâ %D 1988 %P 1443-1454 %V 24 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1988_24_8_a20/ %G ru %F DE_1988_24_8_a20