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@article{DE_1981_17_11_a3, author = {N. I. Vulpe}, title = {The minimal basis of comitants of a differential system with quadratic nonlinearities}, journal = {Differencialʹnye uravneni\^a}, pages = {1955--1963}, publisher = {mathdoc}, volume = {17}, number = {11}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1981_17_11_a3/} }
N. I. Vulpe. The minimal basis of comitants of a differential system with quadratic nonlinearities. Differencialʹnye uravneniâ, Tome 17 (1981) no. 11, pp. 1955-1963. http://geodesic.mathdoc.fr/item/DE_1981_17_11_a3/