%0 Journal Article
%A V. I. Elkin
%T Classification of affine controllable systems with a phase space of dimension $n<4$
%J Doklady Akademii Nauk
%D 1988
%P 18-20
%V 302
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1988_302_1_a2/
%G ru
%F DAN_1988_302_1_a2