@article{DAN_1974_214_1_a6,
     author = {I. I. Ibragimov and I. F. Kushnirchuk},
     title = {On the equivalence of {Bessel} and {Euler} operators in spaces of functions analytic in a disk},
     journal = {Doklady Akademii Nauk},
     pages = {33--36},
     publisher = {mathdoc},
     volume = {214},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_214_1_a6/}
}