%0 Journal Article
%A Z. M. Kochetkova
%T The isochrony of a certain system of differential equations
%J Differencialʹnye uravneniâ
%D 1971
%P 359-362
%V 7
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1971_7_2_a17/
%G ru
%F DE_1971_7_2_a17