TY  - JOUR
AU  - V. Ya. Stetsenko
TI  - An estimate for the spectrum of some classes of linear operators
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 1054
EP  - 1057
VL  - 157
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_157_5_a10/
LA  - ru
ID  - DAN_1964_157_5_a10
ER  -