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@article{DE_1994_30_5_a9, author = {A. V. Bitsadze}, title = {On the theory of quasilinear partial differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {814--820}, publisher = {mathdoc}, volume = {30}, number = {5}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1994_30_5_a9/} }
A. V. Bitsadze. On the theory of quasilinear partial differential equations. Differencialʹnye uravneniâ, Tome 30 (1994) no. 5, pp. 814-820. http://geodesic.mathdoc.fr/item/DE_1994_30_5_a9/