@article{DE_2004_40_4_a12,
     author = {S. S. Kharibegashvili},
     title = {A {Multidimensional} {Version} of the {Darboux} {Problem} for a {Model} {Degenerating} {Second-Order} {Hyperbolic} {Equation}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {565--573},
     publisher = {mathdoc},
     volume = {40},
     number = {4},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_4_a12/}
}