TY  - JOUR
AU  - D. L. Berman
TI  - Solution of an extremal problem in operator theory
JO  - Doklady Akademii Nauk
PY  - 1982
SP  - 777
EP  - 781
VL  - 265
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1982_265_4_a0/
LA  - ru
ID  - DAN_1982_265_4_a0
ER  -