%0 Journal Article
%A N. P. Morozov
%T The approximate determination of the period of the periodic solution of a certain strongly nonlinear system
%J Differencialʹnye uravneniâ
%D 1974
%P 1412-1422
%V 10
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1974_10_8_a8/
%G ru
%F DE_1974_10_8_a8