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@article{DAN_1962_143_4_a2, author = {A. D. Bruno}, title = {Asymptotic behavior of solutions of systems of differential equations}, journal = {Doklady Akademii Nauk}, pages = {763--766}, publisher = {mathdoc}, volume = {143}, number = {4}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_143_4_a2/} }
A. D. Bruno. Asymptotic behavior of solutions of systems of differential equations. Doklady Akademii Nauk, Tome 143 (1962) no. 4, pp. 763-766. http://geodesic.mathdoc.fr/item/DAN_1962_143_4_a2/