TY  - JOUR
AU  - B. Yu. Sternin
TI  - On differential equations of subprincipal type
JO  - Doklady Akademii Nauk
PY  - 1982
SP  - 1078
EP  - 1081
VL  - 265
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1982_265_5_a12/
LA  - ru
ID  - DAN_1982_265_5_a12
ER  -