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@article{DE_1981_17_1_a18, author = {S. S. Kharibegashvili}, title = {A problem of {Goursat} type for a class of hyperbolic systems}, journal = {Differencialʹnye uravneni\^a}, pages = {157--164}, publisher = {mathdoc}, volume = {17}, number = {1}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1981_17_1_a18/} }
S. S. Kharibegashvili. A problem of Goursat type for a class of hyperbolic systems. Differencialʹnye uravneniâ, Tome 17 (1981) no. 1, pp. 157-164. http://geodesic.mathdoc.fr/item/DE_1981_17_1_a18/