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@article{DE_1975_11_11_a13, author = {V. P. Egorov}, title = {The generalized {Neumann--Tricomi} problem}, journal = {Differencialʹnye uravneni\^a}, pages = {2040--2051}, publisher = {mathdoc}, volume = {11}, number = {11}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1975_11_11_a13/} }
V. P. Egorov. The generalized Neumann--Tricomi problem. Differencialʹnye uravneniâ, Tome 11 (1975) no. 11, pp. 2040-2051. http://geodesic.mathdoc.fr/item/DE_1975_11_11_a13/