%0 Journal Article %A A. V. Kuzhel' %T Conditions for the equality $D_A=D_{A^*}$ for unbounded operators %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1961 %V 16 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1961_16_3_a12/ %G ru %F RM_1961_16_3_a12