@article{IVM_1983_8_a11,
     author = {O. I. Soibel'man},
     title = {Perturbations of a~weighted shift operator},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {60--63},
     publisher = {mathdoc},
     number = {8},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_8_a11/}
}