@article{DE_1982_18_2_a12,
     author = {D. K. Gvazava},
     title = {On a modified formulation of the {Goursat} problem for a second-order quasilinear degenerate hyperbolic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {285--290},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_2_a12/}
}