@article{DE_1978_14_8_a7,
     author = {F. T. Baranovskii},
     title = {A mixed problem for a second order degenerate hyperbolic equation with two variables},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1424--1438},
     publisher = {mathdoc},
     volume = {14},
     number = {8},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_8_a7/}
}