%0 Journal Article
%A V. N. Laptinskii
%A V. L. Titov
%T On the theory of periodic solutions of semilinear differential systems
%J Differencialʹnye uravneniâ
%D 1999
%P 1036-1045
%V 35
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1999_35_8_a5/
%G ru
%F DE_1999_35_8_a5