TY - JOUR AU - A. M. Minkin AU - L. A. Shuster TI - Distribution of the spectrum and the convergence of spectral expansions for an operator of Schr\"odinger type JO - Differencialʹnye uravneniâ PY - 1991 SP - 1778 EP - 1789 VL - 27 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1991_27_10_a15/ LA - ru ID - DE_1991_27_10_a15 ER -