%0 Journal Article
%A A. F. Andreev
%A I. V. Pehenko
%T A system with one zero root of the characteristic equation
%J Differencialʹnye uravneniâ
%D 1977
%P 944-946
%V 13
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_5_a16/
%G ru
%F DE_1977_13_5_a16