@article{IVM_1978_4_a10,
     author = {M. A. Sheshko},
     title = {Approximate solution of the {Riemann} boundary value problem with discontinuous coefficients},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {91--103},
     publisher = {mathdoc},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1978_4_a10/}
}