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@article{DE_1982_18_7_a11, author = {G. G. Yelenin}, title = {A system of quasilinear nonstationary equations of mixed type}, journal = {Differencialʹnye uravneni\^a}, pages = {1186--1190}, publisher = {mathdoc}, volume = {18}, number = {7}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1982_18_7_a11/} }
G. G. Yelenin. A system of quasilinear nonstationary equations of mixed type. Differencialʹnye uravneniâ, Tome 18 (1982) no. 7, pp. 1186-1190. http://geodesic.mathdoc.fr/item/DE_1982_18_7_a11/