%0 Journal Article
%A E. L. Tonkov
%A G. I. Yutkin
%T Periodic solutions, and stability of a linear differential equation with periodic coefficients
%J Differencialʹnye uravneniâ
%D 1969
%P 1990-2001
%V 5
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_11_a4/
%G ru
%F DE_1969_5_11_a4