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@article{KUKZ_1984_21_21_a3, author = {L. K. Astaf'eva}, title = {A nonlinear boundary value problem for an equation of mixed type}, journal = {Trudy seminara po kraevym zada\v{c}am}, pages = {32--39}, publisher = {mathdoc}, volume = {21}, number = {21}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KUKZ_1984_21_21_a3/} }
L. K. Astaf'eva. A nonlinear boundary value problem for an equation of mixed type. Trudy seminara po kraevym zadačam, Trudy Seminara po Kraevym Zadacham, Tome 21 (1984) no. 21, pp. 32-39. http://geodesic.mathdoc.fr/item/KUKZ_1984_21_21_a3/