%0 Journal Article
%A A. V. Lasunsky
%T The small change of characteristic exponents of a linear second-order system
%J Differencialʹnye uravneniâ
%D 1982
%P 1824-1825
%V 18
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1982_18_10_a23/
%G ru
%F DE_1982_18_10_a23