TY - JOUR AU - V. S. Serov TI - Fractional powers of a differential operator with singularity JO - Differencialʹnye uravneniâ PY - 1986 SP - 134 EP - 142 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1986_22_1_a15/ LA - ru ID - DE_1986_22_1_a15 ER -