TY  - JOUR
AU  - O. A. Plaksina
TI  - Condition for localization of the spectrum of a Sturm--Liouville boundary value problem on the positive half axis
JO  - Differencialʹnye uravneniâ
PY  - 1983
SP  - 2177
EP  - 2179
VL  - 19
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1983_19_12_a22/
LA  - ru
ID  - DE_1983_19_12_a22
ER  -