%0 Journal Article
%A V. N. Laptinskii
%T Inequalities of the Wa{\.z}ewski inequality type for the system $x^{''}=A(t)x$
%J Differencialʹnye uravneniâ
%D 1973
%P 961-964
%V 9
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1973_9_5_a23/
%G ru
%F DE_1973_9_5_a23