@article{DE_1982_18_4_a12,
     author = {V. M. Dikasov},
     title = {Solution of some problems on wave propagation in a ball by the reflection method},
     journal = {Differencialʹnye uravneni\^a},
     pages = {631--638},
     year = {1982},
     volume = {18},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_4_a12/}
}