TY - JOUR AU - A. M. Olevskii TI - On operators generating conditional bases in a Hilbert space JO - Matematičeskie zametki PY - 1972 SP - 73 EP - 84 VL - 12 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1972_12_1_a9/ LA - ru ID - MZM_1972_12_1_a9 ER -