@article{TM_1968_95_a9,
     author = {N. V. Zepelev},
     title = {The propagation of oscillations in a~medium with a~transition layer},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {184--212},
     publisher = {mathdoc},
     volume = {95},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1968_95_a9/}
}