%0 Journal Article
%A È. I. Grudo
%T A formula for periodic solutions of a linear nonhomogeneous differential system with a Jordan cell
%J Differencialʹnye uravneniâ
%D 1989
%P 521-523
%V 25
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_3_a17/
%G ru
%F DE_1989_25_3_a17