@article{DAN_1984_278_3_a9,
     author = {E. P. Sobolevskii},
     title = {Estimates of noncommutativity in the averaging principle},
     journal = {Doklady Akademii Nauk},
     pages = {552--556},
     publisher = {mathdoc},
     volume = {278},
     number = {3},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_278_3_a9/}
}