@article{ZVMMF_1972_12_2_a7,
     author = {M. V. Fedoryuk},
     title = {The {Helmholtz} equation in a wave guide (the elimination of the boundary condition at infinity)},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {374--387},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1972_12_2_a7/}
}