TY  - JOUR
AU  - O. A. Plaksina
TI  - The characteristic of the~spectrum of some boundary-value problems for the~Sturm--Liouville operator
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1981
SP  - 191
EP  - 192
VL  - 36
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1981_36_2_a17/
LA  - en
ID  - RM_1981_36_2_a17
ER  -