@article{DAN_1988_302_6_a3,
     author = {A. Dzhuraev},
     title = {Mixed problems for first-order hyperbolic systems},
     journal = {Doklady Akademii Nauk},
     pages = {1301--1305},
     publisher = {mathdoc},
     volume = {302},
     number = {6},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_302_6_a3/}
}