%0 Journal Article
%A V. V. Basov
%T The Generalized Normal Form and Formal Equivalence of Systems of Differential Equations with Zero Approximation $(x_2^3,-x_1^3)$
%J Differencialʹnye uravneniâ
%D 2004
%P 1011-1022
%V 40
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2004_40_8_a0/
%G ru
%F DE_2004_40_8_a0