%0 Journal Article %A R. R. Akhmerov %T The averaging principle and almost periodic solutions of systems of functional-differential equations of neutral type %J Differencialʹnye uravneniâ %D 1975 %P 211-221 %V 11 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_2_a0/ %G ru %F DE_1975_11_2_a0