TY  - JOUR
AU  - V. N. Chetverikov
TI  - Higher Symmetries and the Brunovskii Infinitesimal Form of Controlled Systems
JO  - Differencialʹnye uravneniâ
PY  - 2002
SP  - 1525
EP  - 1532
VL  - 38
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2002_38_11_a10/
LA  - ru
ID  - DE_2002_38_11_a10
ER  -