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@article{DAN_1968_181_2_a2, author = {F. D. Gakhov}, title = {A nonlinear boundary value problem which generalizes the {Riemann} boundary value problem}, journal = {Doklady Akademii Nauk}, pages = {271--274}, publisher = {mathdoc}, volume = {181}, number = {2}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_181_2_a2/} }
F. D. Gakhov. A nonlinear boundary value problem which generalizes the Riemann boundary value problem. Doklady Akademii Nauk, Tome 181 (1968) no. 2, pp. 271-274. http://geodesic.mathdoc.fr/item/DAN_1968_181_2_a2/