TY - JOUR AU - V. S. Serov TI - Absolute convergence of spectral expansions of operators with a singularity JO - Differencialʹnye uravneniâ PY - 1992 SP - 127 EP - 136 VL - 28 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1992_28_1_a14/ LA - ru ID - DE_1992_28_1_a14 ER -