TY  - JOUR
AU  - O. V. Viskov
TI  - On a theorem of R. A. Sack for shift operators
JO  - Doklady Akademii Nauk
PY  - 1995
SP  - 463
EP  - 466
VL  - 340
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1995_340_4_a3/
LA  - ru
ID  - DAN_1995_340_4_a3
ER  -