@article{ZVMMF_1998_38_11_a10,
     author = {A. N. Bogolyubov and A. L. Delitsyn and A. G. Sveshnikov},
     title = {On the completeness of the set of eigen- and associated functions of a waveguide},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1891--1899},
     year = {1998},
     volume = {38},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1998_38_11_a10/}
}