@article{DAN_1980_252_5_a12,
     author = {N. K. Shafiev},
     title = {Asymptotics with respect to a small parameter of the solution of a mixed problem for a hyperbolic equation},
     journal = {Doklady Akademii Nauk},
     pages = {1074--1078},
     publisher = {mathdoc},
     volume = {252},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_5_a12/}
}