%0 Journal Article %A Yu. D. Golovatyǐ %T Spectral properties of oscillatory systems with added masses %J Trudy Moskovskogo matematičeskogo obŝestva %D 1992 %P 29-72 %V 54 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1992_54_a1/ %G ru %F MMO_1992_54_a1