TY  - JOUR
AU  - V. M. Bruk
TI  - Some problems of the spectral theory of a~second-order differential equation with a~variable unbounded operator coefficient
JO  - Matematičeskie zametki
PY  - 1974
SP  - 813
EP  - 822
VL  - 16
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1974_16_5_a15/
LA  - ru
ID  - MZM_1974_16_5_a15
ER  -