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@article{DE_1986_22_2_a23, author = {A. A. German}, title = {Construction of the {Lagrangian} from given first integrals}, journal = {Differencialʹnye uravneni\^a}, pages = {350--352}, publisher = {mathdoc}, volume = {22}, number = {2}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1986_22_2_a23/} }
A. A. German. Construction of the Lagrangian from given first integrals. Differencialʹnye uravneniâ, Tome 22 (1986) no. 2, pp. 350-352. http://geodesic.mathdoc.fr/item/DE_1986_22_2_a23/