TY  - JOUR
AU  - V. V. Grushin
AU  - N. A. Shananin
TI  - Some theorems on the singularities of solutions of differential equations with weighted principal symbols
JO  - Sbornik. Mathematics
PY  - 1977
SP  - 32
EP  - 44
VL  - 32
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1977_32_1_a2/
LA  - en
ID  - SM_1977_32_1_a2
ER  -