Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1974_16_1_a8, author = {B. V. Aleshin}, title = {Averaging in systems containing several small parameters}, journal = {Matemati\v{c}eskie zametki}, pages = {75--82}, publisher = {mathdoc}, volume = {16}, number = {1}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_1_a8/} }
B. V. Aleshin. Averaging in systems containing several small parameters. Matematičeskie zametki, Tome 16 (1974) no. 1, pp. 75-82. http://geodesic.mathdoc.fr/item/MZM_1974_16_1_a8/