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@article{DE_1989_25_4_a12, author = {S. E. Zhelezovsky and V. Ph. Kirichenko and V. A. Krys'ko}, title = {Symmetrization of a hyperbolic equation}, journal = {Differencialʹnye uravneni\^a}, pages = {652--659}, publisher = {mathdoc}, volume = {25}, number = {4}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_4_a12/} }
S. E. Zhelezovsky; V. Ph. Kirichenko; V. A. Krys'ko. Symmetrization of a hyperbolic equation. Differencialʹnye uravneniâ, Tome 25 (1989) no. 4, pp. 652-659. http://geodesic.mathdoc.fr/item/DE_1989_25_4_a12/