@article{DE_1978_14_8_a8,
     author = {V. T. Erofeenko},
     title = {Solution of a boundary value problem for the {Helmholtz} equation in a layered space with a spherical inclusion},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1439--1447},
     publisher = {mathdoc},
     volume = {14},
     number = {8},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_8_a8/}
}