TY - JOUR AU - M. S. Eremin TI - Spectral function of the Sturm--Liouville equation with an impurity potential that is bounded on the half-axis JO - Matematičeskie zametki PY - 1990 SP - 151 EP - 153 VL - 48 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1990_48_2_a20/ LA - ru ID - MZM_1990_48_2_a20 ER -