TY  - JOUR
AU  - Kh. Kh. Murtazin
AU  - A. M. Popova
AU  - V. A. Sadovnichy
TI  - A condition for the existence of the discrete spectrum of the energy operator of a system of two particles in an external field
JO  - Differencialʹnye uravneniâ
PY  - 1986
SP  - 717
EP  - 719
VL  - 22
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1986_22_4_a24/
LA  - ru
ID  - DE_1986_22_4_a24
ER  -