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@article{DAN_1977_234_2_a0, author = {A. V. Bitsadze}, title = {On the {Dirichlet} and {Neumann} problems for nonlinear elliptic equations of second order}, journal = {Doklady Akademii Nauk}, pages = {265--268}, publisher = {mathdoc}, volume = {234}, number = {2}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a0/} }
A. V. Bitsadze. On the Dirichlet and Neumann problems for nonlinear elliptic equations of second order. Doklady Akademii Nauk, Tome 234 (1977) no. 2, pp. 265-268. http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a0/