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@article{DAN_1961_139_2_a11, author = {M. L. Rasulov}, title = {Conditions for the correctness of one-dimensional mixed problems}, journal = {Doklady Akademii Nauk}, pages = {305--308}, publisher = {mathdoc}, volume = {139}, number = {2}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a11/} }
M. L. Rasulov. Conditions for the correctness of one-dimensional mixed problems. Doklady Akademii Nauk, Tome 139 (1961) no. 2, pp. 305-308. http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a11/