@article{DE_1970_6_12_a13,
     author = {L. A. Muravei},
     title = {Asymptotic behavior of the solutions of the second exterior boundary value problem for the two-dimensional wave equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2248--2262},
     publisher = {mathdoc},
     volume = {6},
     number = {12},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_12_a13/}
}