@article{ZVMMF_1999_39_8_a9,
     author = {R. Z. Dautov and E. M. Karchevskii},
     title = {On a spectral problem of the theory of dielectric waveguides},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1348--1355},
     publisher = {mathdoc},
     volume = {39},
     number = {8},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1999_39_8_a9/}
}