TY  - JOUR
AU  - Nguyen Minh Tri
TI  - Some Examples of Nonhypoelliptic Infinitely Degenerate Elliptic Differential Operators
JO  - Matematičeskie zametki
PY  - 2002
SP  - 567
EP  - 580
VL  - 71
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2002_71_4_a8/
LA  - ru
ID  - MZM_2002_71_4_a8
ER  -