TY  - JOUR
AU  - Nguyen Minh Tri
TI  - Global hypoellipticity property of a differential operator
JO  - Matematičeskie zametki
PY  - 1991
SP  - 147
EP  - 150
VL  - 49
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1991_49_2_a19/
LA  - ru
ID  - MZM_1991_49_2_a19
ER  -