@article{DE_1993_29_12_a6,
     author = {S. A. Aldashev},
     title = {Multidimensional {Darboux} problems for degenerate hyperbolic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2097--2103},
     publisher = {mathdoc},
     volume = {29},
     number = {12},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_12_a6/}
}