TY  - JOUR
AU  - Yu. V. Egorov
AU  - Ts. V. Rangelov
TI  - A class of pseudodifferential equations, with double characteristics, that have no solution
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1977
VL  - 32
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1977_32_1_a23/
LA  - ru
ID  - RM_1977_32_1_a23
ER  -