@article{DE_1979_15_1_a24,
     author = {D. Orazov},
     title = {An analoque of the {Darboux} problem for a hyperbolic system in three-dimensional space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {178--182},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_1_a24/}
}