@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/}
}