TY - JOUR AU - V. S. Belonosov TI - The spectral properties of distributions and asymptotic methods in perturbation theory JO - Sbornik. Mathematics PY - 2012 SP - 307 EP - 325 VL - 203 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2012_203_3_a0/ LA - en ID - SM_2012_203_3_a0 ER -