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@article{DE_1996_32_7_a16, author = {N. G. Makeev}, title = {Center conditions for a system with fifth-order nonlinearities of a special form}, journal = {Differencialʹnye uravneni\^a}, pages = {990--991}, publisher = {mathdoc}, volume = {32}, number = {7}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1996_32_7_a16/} }
N. G. Makeev. Center conditions for a system with fifth-order nonlinearities of a special form. Differencialʹnye uravneniâ, Tome 32 (1996) no. 7, pp. 990-991. http://geodesic.mathdoc.fr/item/DE_1996_32_7_a16/