TY  - JOUR
AU  - S. N. Naboko
TI  - On the structure of roots of operator-valued functions with positive imaginary part in the classes $\sigma_p$
JO  - Doklady Akademii Nauk
PY  - 1987
SP  - 538
EP  - 541
VL  - 295
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1987_295_3_a4/
LA  - ru
ID  - DAN_1987_295_3_a4
ER  -