TY - JOUR AU - Yu. D. Golovatyǐ TI - Spectral properties of oscillatory systems with added masses JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 1992 SP - 29 EP - 72 VL - 54 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MMO_1992_54_a1/ LA - ru ID - MMO_1992_54_a1 ER -