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@article{IVM_1986_5_a6, author = {I. E. Ivanov and V. I. Kireev}, title = {A mixed boundary value problem for a~hyperbolic system}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {38--42}, publisher = {mathdoc}, number = {5}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1986_5_a6/} }
I. E. Ivanov; V. I. Kireev. A mixed boundary value problem for a~hyperbolic system. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1986), pp. 38-42. http://geodesic.mathdoc.fr/item/IVM_1986_5_a6/