TY - JOUR AU - V. E. Volkov TI - Boundedness of the number of orthogonal solutions of the equation $-u''+q(x)u=\lambda u for large values of $-\lambda$ JO - Matematičeskie zametki PY - 1984 SP - 691 EP - 695 VL - 36 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1984_36_5_a6/ LA - ru ID - MZM_1984_36_5_a6 ER -