TY  - JOUR
AU  - N. A. Shananin
TI  - An example of a locally unsolvable differential equation of quasiprincipal type with a real-valued weighted principal symbol
JO  - Matematičeskie zametki
PY  - 1976
SP  - 755
EP  - 761
VL  - 19
IS  - 5
UR  - http://geodesic.mathdoc.fr/item/MZM_1976_19_5_a10/
LA  - ru
ID  - MZM_1976_19_5_a10
ER  -