@article{DE_1974_10_4_a19,
     author = {G. P. Boyko},
     title = {The exterior generalized {Dirichlet} problem for the {Helmholtz} equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {747--750},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_4_a19/}
}