%0 Journal Article
%A V. N. Laptinskii
%T Construction of periodic solutions of differential equations
%J Differencialʹnye uravneniâ
%D 1984
%P 536-539
%V 20
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1984_20_3_a24/
%G ru
%F DE_1984_20_3_a24