@article{IVM_2015_7_a6,
     author = {E. A. Utkina},
     title = {Characteristic boundary-value problem for a~system of first-order partial differential equations with a~shift of arguments of the sought-for function},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {63--68},
     publisher = {mathdoc},
     number = {7},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2015_7_a6/}
}