@article{TM_1968_95_a4,
     author = {P. V. Krauklis},
     title = {Head waves in a~medium with a~high-speed layer},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {98--105},
     publisher = {mathdoc},
     volume = {95},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1968_95_a4/}
}