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@article{DE_1989_25_3_a1, author = {V. F. Zaitsev}, title = {Discrete-group analysis of ordinary differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {379--387}, publisher = {mathdoc}, volume = {25}, number = {3}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_3_a1/} }
V. F. Zaitsev. Discrete-group analysis of ordinary differential equations. Differencialʹnye uravneniâ, Tome 25 (1989) no. 3, pp. 379-387. http://geodesic.mathdoc.fr/item/DE_1989_25_3_a1/