TY  - JOUR
AU  - V. D. Budaev
TI  - A necessary condition for the Riesz basis property of systems of
JO  - Doklady Akademii Nauk
PY  - 1991
SP  - 873
EP  - 875
VL  - 321
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1991_321_5_a0/
LA  - ru
ID  - DAN_1991_321_5_a0
ER  -