%0 Journal Article
%A V. V. Basov
%T A Generalized Normal Form and Formal Equivalence of Systems of Differential Equations with Zero Characteristic Numbers
%J Differencialʹnye uravneniâ
%D 2003
%P 154-170
%V 39
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2003_39_2_a1/
%G ru
%F DE_2003_39_2_a1