%0 Journal Article %A Yu. V. Komlenko %T Chaplygin's theorem for a second-order linear differential equation with retarded argument %J Matematičeskie zametki %D 1967 %P 301-306 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1967_2_3_a8/ %G ru %F MZM_1967_2_3_a8