TY  - JOUR
AU  - I. A. Shishmarev
TI  - On asymptotic behavior as $t\to0$ and $T$-product for hypoelliptic systems
JO  - Doklady Akademii Nauk
PY  - 1976
SP  - 1018
EP  - 1020
VL  - 226
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1976_226_5_a7/
LA  - ru
ID  - DAN_1976_226_5_a7
ER  -