TY  - JOUR
AU  - V. N. Lebedev
TI  - Iterative methods for solving operator equations with a spectrum contained in several intervals
JO  - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki
PY  - 1969
SP  - 1247
EP  - 1252
VL  - 9
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZVMMF_1969_9_6_a2/
LA  - ru
ID  - ZVMMF_1969_9_6_a2
ER  -