%0 Journal Article %A V. A. Senderov %T Operators, absolutely indefinitely bounded below, in spaces with indefinite metric %J Matematičeskie zametki %D 1971 %P 301-305 %V 10 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1971_10_3_a7/ %G ru %F MZM_1971_10_3_a7