%0 Journal Article %A L. M. Raikh %T On the extension of a~$J$-Hermitian operator with nondense domain of definition %J Matematičeskie zametki %D 1975 %P 737-743 %V 17 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1975_17_5_a6/ %G ru %F MZM_1975_17_5_a6