@article{DAN_1960_134_2_a0,
     author = {V. M. Alekseev},
     title = {The asymptotic behaviour of solutions of slightly non-linear systems of ordinary differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {247--250},
     publisher = {mathdoc},
     volume = {134},
     number = {2},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_134_2_a0/}
}