TY  - JOUR
AU  - R. S. Ismagilov
TI  - Conditions for the semiboundedness and discreteness of the spectrum in the case of one-dimensional differential operators
JO  - Doklady Akademii Nauk
PY  - 1961
SP  - 33
EP  - 36
VL  - 140
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a7/
LA  - ru
ID  - DAN_1961_140_1_a7
ER  -