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@article{DE_2006_42_2_a7, author = {S. L. Sobolevskii}, title = {On a modification of the small parameter method}, journal = {Differencialʹnye uravneni\^a}, pages = {202--212}, publisher = {mathdoc}, volume = {42}, number = {2}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2006_42_2_a7/} }
S. L. Sobolevskii. On a modification of the small parameter method. Differencialʹnye uravneniâ, Tome 42 (2006) no. 2, pp. 202-212. http://geodesic.mathdoc.fr/item/DE_2006_42_2_a7/