%0 Journal Article
%A V. I. Zubov
%T Normal form of the phase space of a mechanical system
%J Doklady Akademii Nauk
%D 1990
%P 273-276
%V 313
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_313_2_a2/
%G ru
%F DAN_1990_313_2_a2