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@article{DE_1990_26_3_a22, author = {G. G. Gafarov}, title = {Symmetries and first integrals of dynamical systems}, journal = {Differencialʹnye uravneni\^a}, pages = {531--532}, publisher = {mathdoc}, volume = {26}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1990_26_3_a22/} }
G. G. Gafarov. Symmetries and first integrals of dynamical systems. Differencialʹnye uravneniâ, Tome 26 (1990) no. 3, pp. 531-532. http://geodesic.mathdoc.fr/item/DE_1990_26_3_a22/