@article{DE_1991_27_6_a20,
     author = {S. N. Baranovskaya},
     title = {Classical solution of a mixed problem for a one-dimensional hyperbolic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1071--1073},
     publisher = {mathdoc},
     volume = {27},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_6_a20/}
}