TY  - JOUR
AU  - L. R. Volevich
TI  - A class of hypoelliptic systems
JO  - Doklady Akademii Nauk
PY  - 1960
SP  - 1275
EP  - 1278
VL  - 134
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1960_134_6_a1/
LA  - ru
ID  - DAN_1960_134_6_a1
ER  -