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@article{DAN_1962_144_3_a7, author = {A. I. Perov}, title = {A boundary-value problem for a system of two differential equations}, journal = {Doklady Akademii Nauk}, pages = {493--496}, publisher = {mathdoc}, volume = {144}, number = {3}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_3_a7/} }
A. I. Perov. A boundary-value problem for a system of two differential equations. Doklady Akademii Nauk, Tome 144 (1962) no. 3, pp. 493-496. http://geodesic.mathdoc.fr/item/DAN_1962_144_3_a7/