%0 Journal Article
%A N. N. Petrov
%T The minimum number of vector fields forming a control system with given properties
%J Differencialʹnye uravneniâ
%D 1985
%P 2063-2068
%V 21
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_12_a5/
%G ru
%F DE_1985_21_12_a5