%0 Journal Article
%A N. N. Petrov
%T An analogue of the Birkhoff theory for invariant sets of control systems
%J Differencialʹnye uravneniâ
%D 1979
%P 2155-2160
%V 15
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1979_15_12_a5/
%G ru
%F DE_1979_15_12_a5