%0 Journal Article
%A V. P. Sakhnenko
%A G. M. Chechin
%T Groups of modes and normal oscillations for nonlinear dynamical
%J Doklady Akademii Nauk
%D 1994
%P 42-45
%V 338
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1994_338_1_a9/
%G ru
%F DAN_1994_338_1_a9