%0 Journal Article
%A I. T. Kiguradze
%T Periodic solutions of systems of nonautonomous ordinary differential equations
%J Matematičeskie zametki
%D 1986
%P 562-575
%V 39
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1986_39_4_a9/
%G ru
%F MZM_1986_39_4_a9