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@article{DE_1975_11_3_a10, author = {N. P. Kulikov}, title = {The {Cauchy} problem for hyperbolic equations with degeneracy of type on the initial line}, journal = {Differencialʹnye uravneni\^a}, pages = {512--522}, publisher = {mathdoc}, volume = {11}, number = {3}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1975_11_3_a10/} }
N. P. Kulikov. The Cauchy problem for hyperbolic equations with degeneracy of type on the initial line. Differencialʹnye uravneniâ, Tome 11 (1975) no. 3, pp. 512-522. http://geodesic.mathdoc.fr/item/DE_1975_11_3_a10/