@article{GMJ_1997__4_4_47783,
     author = {Kharibegashvili, S.},
     title = {On the solvability of the multidimensional version of the first {Darboux} problem for a model second-order degenerating hyperbolic equation.},
     journal = {Georgian Mathematical Journal},
     pages = {341--354},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1997},
     zbl = {0880.35079},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1997__4_4_47783/}
}