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@article{DE_1981_17_6_a15, author = {T. Sh. Kal'menov}, title = {Regular boundary value problems for the wave equation}, journal = {Differencialʹnye uravneni\^a}, pages = {1105--1121}, publisher = {mathdoc}, volume = {17}, number = {6}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1981_17_6_a15/} }
T. Sh. Kal'menov. Regular boundary value problems for the wave equation. Differencialʹnye uravneniâ, Tome 17 (1981) no. 6, pp. 1105-1121. http://geodesic.mathdoc.fr/item/DE_1981_17_6_a15/