@article{DE_1966_2_4_a10,
     author = {Z. O. Mel'nik},
     title = {On a certain method for solving the mixed problem for a hyperbolic equation with disontinuous coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {560--570},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1966_2_4_a10/}
}