%0 Journal Article %A B. Z. Moroz %T States in quantum mechanics and a~problem of the operator theory %J Zapiski Nauchnykh Seminarov POMI %D 1974 %P 189-190 %V 39 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1974_39_a17/ %G ru %F ZNSL_1974_39_a17