@article{DAN_1958_120_3_a17,
     author = {V. Pokrovskii and F. Ulinich and S. Savvinykh},
     title = {Local reflection in wave guides of variable section},
     journal = {Doklady Akademii Nauk},
     pages = {504--506},
     publisher = {mathdoc},
     volume = {120},
     number = {3},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_120_3_a17/}
}