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@article{DE_1983_19_1_a17, author = {R. I. Sokhadze}, title = {The first boundary value problem for an equation of mixed type in a rectangle}, journal = {Differencialʹnye uravneni\^a}, pages = {127--134}, publisher = {mathdoc}, volume = {19}, number = {1}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_1_a17/} }
R. I. Sokhadze. The first boundary value problem for an equation of mixed type in a rectangle. Differencialʹnye uravneniâ, Tome 19 (1983) no. 1, pp. 127-134. http://geodesic.mathdoc.fr/item/DE_1983_19_1_a17/