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@article{DE_1993_29_2_a4, author = {A. P. Sadovskii}, title = {Limit cycles of a cubic system of nonlinear oscillations}, journal = {Differencialʹnye uravneni\^a}, pages = {226--231}, publisher = {mathdoc}, volume = {29}, number = {2}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1993_29_2_a4/} }
A. P. Sadovskii. Limit cycles of a cubic system of nonlinear oscillations. Differencialʹnye uravneniâ, Tome 29 (1993) no. 2, pp. 226-231. http://geodesic.mathdoc.fr/item/DE_1993_29_2_a4/