@article{DE_1973_9_1_a8,
     author = {T. Sh. Kal'menov},
     title = {The characteristic {Cauchy} problem for a certain class of degenerate hyperbolic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {84--96},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_1_a8/}
}