%0 Journal Article %A B. S. Razumikhin %T A method of studying the stability of systems with an aftereffect %J Doklady Akademii Nauk %D 1966 %P 1234-1237 %V 167 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_167_6_a5/ %G ru %F DAN_1966_167_6_a5