TY - JOUR AU - I. I. Ibragimov AU - I. F. Kushnirchuk TI - On the equivalence of Bessel and Euler operators in spaces of functions analytic in a disk JO - Doklady Akademii Nauk PY - 1974 SP - 33 EP - 36 VL - 214 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1974_214_1_a6/ LA - ru ID - DAN_1974_214_1_a6 ER -