@article{DAN_1987_297_4_a14,
     author = {Yu. G. Smirnov},
     title = {Completeness of the system of eigen- and associated waves of a},
     journal = {Doklady Akademii Nauk},
     pages = {829--832},
     publisher = {mathdoc},
     volume = {297},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_297_4_a14/}
}