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@article{DE_1987_23_1_a8, author = {G. D. Karatoprakliev}, title = {Nonlocal boundary value problems for equations of mixed type}, journal = {Differencialʹnye uravneni\^a}, pages = {78--84}, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1987_23_1_a8/} }
G. D. Karatoprakliev. Nonlocal boundary value problems for equations of mixed type. Differencialʹnye uravneniâ, Tome 23 (1987) no. 1, pp. 78-84. http://geodesic.mathdoc.fr/item/DE_1987_23_1_a8/