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@article{DE_1986_22_1_a8, author = {A. G. Kuz'min}, title = {Boundary value problems for equations of mixed type containing a mixed derivative}, journal = {Differencialʹnye uravneni\^a}, pages = {66--74}, publisher = {mathdoc}, volume = {22}, number = {1}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1986_22_1_a8/} }
A. G. Kuz'min. Boundary value problems for equations of mixed type containing a mixed derivative. Differencialʹnye uravneniâ, Tome 22 (1986) no. 1, pp. 66-74. http://geodesic.mathdoc.fr/item/DE_1986_22_1_a8/