TY  - JOUR
AU  - P. A. Borodin
TI  - Quasiorthogonal sets and conditions for a Banach space to be a Hilbert space
JO  - Sbornik. Mathematics
PY  - 1997
SP  - 1171
EP  - 1182
VL  - 188
IS  - 8
UR  - http://geodesic.mathdoc.fr/item/SM_1997_188_8_a3/
LA  - en
ID  - SM_1997_188_8_a3
ER  -