TY  - JOUR
AU  - V. M. Filippov
TI  - Variational principles for hypoelliptic equations
JO  - Doklady Akademii Nauk
PY  - 1985
SP  - 302
EP  - 305
VL  - 285
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1985_285_2_a9/
LA  - ru
ID  - DAN_1985_285_2_a9
ER  -