%0 Journal Article
%A G. S. Krechetov
%T Lower and upper bounds for solutions of some classes of first-order differential equations
%J Differencialʹnye uravneniâ
%D 1989
%P 1523-1526
%V 25
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_9_a7/
%G ru
%F DE_1989_25_9_a7