TY  - JOUR
AU  - Yu. I. Lyubich
TI  - On a certain class of operators in Banach space
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1965
VL  - 20
IS  - 6
UR  - http://geodesic.mathdoc.fr/item/RM_1965_20_6_a23/
LA  - ru
ID  - RM_1965_20_6_a23
ER  -