TY  - JOUR
AU  - N. N. Petrov
TI  - An analogue of the Birkhoff theory for invariant sets of control systems
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 2155
EP  - 2160
VL  - 15
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_12_a5/
LA  - ru
ID  - DE_1979_15_12_a5
ER  -