@article{ZVMMF_1968_8_2_a7,
     author = {A. S. Il'inskii and A. G. Sveshnikov},
     title = {Methods for investigating irregular waveguides},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {363--373},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1968_8_2_a7/}
}