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@article{IVM_1984_3_a5, author = {V. I. Zhegalov}, title = {A~boundary value problem for the {Lavrent'ev--Bitsadze} equation in polar coordinates}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {38--44}, publisher = {mathdoc}, number = {3}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1984_3_a5/} }
V. I. Zhegalov. A~boundary value problem for the Lavrent'ev--Bitsadze equation in polar coordinates. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1984), pp. 38-44. http://geodesic.mathdoc.fr/item/IVM_1984_3_a5/