TY - JOUR AU - D. F. Kharazov TI - Some unbounded symmetrizable operators in Hilbert spaces JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1960 VL - 15 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1960_15_4_a15/ LA - ru ID - RM_1960_15_4_a15 ER -