@article{DAN_1991_316_2_a6,
     author = {F. G. Maksudov and B. P. Allahverdiev and E. M. Bairamov},
     title = {On the spectral theory of a nonselfadjoint operator generated by},
     journal = {Doklady Akademii Nauk},
     pages = {292--296},
     publisher = {mathdoc},
     volume = {316},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_2_a6/}
}