%0 Journal Article
%A V. V. Basov
%A A. V. Skitovich
%T A Generalized Normal Form and Formal Equivalence of Two-Dimensional Systems with Quadratic Zero Approximation: II
%J Differencialʹnye uravneniâ
%D 2005
%P 1011-1023
%V 41
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2005_41_8_a0/
%G ru
%F DE_2005_41_8_a0