%0 Journal Article
%A G. G. Bulychev
%T The characteristic form of equations in the dynamics of
%J Doklady Akademii Nauk
%D 1990
%P 312-316
%V 314
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_314_2_a12/
%G ru
%F DAN_1990_314_2_a12