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@article{DE_1984_20_6_a3, author = {V. P. Igumnov}, title = {Representation of solutions of differential equations by modified {Lie} series}, journal = {Differencialʹnye uravneni\^a}, pages = {952--958}, publisher = {mathdoc}, volume = {20}, number = {6}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_6_a3/} }
V. P. Igumnov. Representation of solutions of differential equations by modified Lie series. Differencialʹnye uravneniâ, Tome 20 (1984) no. 6, pp. 952-958. http://geodesic.mathdoc.fr/item/DE_1984_20_6_a3/