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@article{DE_1968_4_7_a17, author = {N. J. Yurchuk}, title = {The {Goursat} problem for a second order hyperbolic equation of a special form}, journal = {Differencialʹnye uravneni\^a}, pages = {1333--1345}, publisher = {mathdoc}, volume = {4}, number = {7}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1968_4_7_a17/} }
N. J. Yurchuk. The Goursat problem for a second order hyperbolic equation of a special form. Differencialʹnye uravneniâ, Tome 4 (1968) no. 7, pp. 1333-1345. http://geodesic.mathdoc.fr/item/DE_1968_4_7_a17/