TY  - JOUR
AU  - Allan M. Krall
TI  - On non-self-adjoint ordinary differential operators of the second order
JO  - Doklady Akademii Nauk
PY  - 1965
SP  - 1235
EP  - 1237
VL  - 165
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1965_165_6_a3/
LA  - ru
ID  - DAN_1965_165_6_a3
ER  -