@article{DE_1992_28_12_a8,
     author = {A. B. Bazarbekov},
     title = {An analogue of the {Darboux} problem for the two-dimensional wave equation. {I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2075--2085},
     publisher = {mathdoc},
     volume = {28},
     number = {12},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_12_a8/}
}