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@article{DE_1984_20_10_a23, author = {D. N. Kachevsky}, title = {First integrals of a system of differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1819--1821}, publisher = {mathdoc}, volume = {20}, number = {10}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_10_a23/} }
D. N. Kachevsky. First integrals of a system of differential equations. Differencialʹnye uravneniâ, Tome 20 (1984) no. 10, pp. 1819-1821. http://geodesic.mathdoc.fr/item/DE_1984_20_10_a23/