@article{DE_2002_38_1_a12,
     author = {O. M. Dzhokhadze},
     title = {The {Goursat} {Problem} for {Second-Order} {Hyperbolic} {Systems} with {Nonsplitting} {Leading} {Parts}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {87--92},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_1_a12/}
}