%0 Journal Article %A D. F. Kharazov %T Some unbounded symmetrizable operators in Hilbert spaces %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1960 %V 15 %N 4 %U http://geodesic.mathdoc.fr/item/RM_1960_15_4_a15/ %G ru %F RM_1960_15_4_a15