TY  - JOUR
AU  - E. A. Begovatov
TI  - A condition for the completeness of the system of root subspaces of a Sturm--Liouville type operator in Hilbert space
JO  - Differencialʹnye uravneniâ
PY  - 1972
SP  - 1738
EP  - 1744
VL  - 8
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1972_8_10_a1/
LA  - ru
ID  - DE_1972_8_10_a1
ER  -