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@article{DE_1975_11_5_a16, author = {N. I. Vulpe}, title = {A minimal polynomial base of the affine invariants of a quadratic system}, journal = {Differencialʹnye uravneni\^a}, pages = {918--920}, publisher = {mathdoc}, volume = {11}, number = {5}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1975_11_5_a16/} }
N. I. Vulpe. A minimal polynomial base of the affine invariants of a quadratic system. Differencialʹnye uravneniâ, Tome 11 (1975) no. 5, pp. 918-920. http://geodesic.mathdoc.fr/item/DE_1975_11_5_a16/