%0 Journal Article
%A V. V. Basov
%T A generalized normal form and formal equivalence of two-dimensional systems with quadratic zero approximation: III
%J Differencialʹnye uravneniâ
%D 2006
%P 308-319
%V 42
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2006_42_3_a2/
%G ru
%F DE_2006_42_3_a2