TY  - JOUR
AU  - N. N. Petrov
TI  - A remark on plane analytic control systems
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 743
EP  - 744
VL  - 15
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_4_a22/
LA  - ru
ID  - DE_1979_15_4_a22
ER  -