%0 Journal Article %A G. S. Larionov %T Three variants of averaging in integro-differential equations %J Differencialʹnye uravneniâ %D 1970 %P 1125-1126 %V 6 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_6_a19/ %G ru %F DE_1970_6_6_a19