@article{DE_1980_16_6_a9,
     author = {V. N. Gol'dberg},
     title = {Convergence of the solution of a mixed problem for a hyperbolic system on the plane with singularly perturbed boundary condition to the solution of a degenerate},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1076--1090},
     publisher = {mathdoc},
     volume = {16},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_6_a9/}
}