TY  - JOUR
AU  - V. G. Limanskii
TI  - On differential-operator equations of second order
JO  - Izvestiya. Mathematics 
PY  - 1975
SP  - 1241
EP  - 1277
VL  - 9
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1975_9_6_a5/
LA  - en
ID  - IM2_1975_9_6_a5
ER  -