@article{DE_1999_35_8_a13,
     author = {S. S. Kharibegashvili},
     title = {On the solvability of some multidimensional versions of the {Goursat} problem for a first-order hyperbolic system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1112--1121},
     year = {1999},
     volume = {35},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_8_a13/}
}