@article{DE_1979_15_5_a3,
     author = {S. L. Nosov},
     title = {Averaging of a perturbed system over the time interval $O(\varepsilon^{-k})$, $k>1$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {805--808},
     publisher = {mathdoc},
     volume = {15},
     number = {5},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_5_a3/}
}