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@article{MZM_1990_48_5_a21, author = {M. M. Sirazhudinov}, title = {Periodic solutions of a~first-order elliptic system}, journal = {Matemati\v{c}eskie zametki}, pages = {153--155}, publisher = {mathdoc}, volume = {48}, number = {5}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_5_a21/} }
M. M. Sirazhudinov. Periodic solutions of a~first-order elliptic system. Matematičeskie zametki, Tome 48 (1990) no. 5, pp. 153-155. http://geodesic.mathdoc.fr/item/MZM_1990_48_5_a21/