Abstract
We present a solution of the center-focus problem for a nine-parameter cubic system that can be reduced to a Lienard type system.
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Original Russian Text © A.P. Sadovskii, T.V. Shcheglova, 2011, published in Differentsial’nye Uravneniya, 2011, Vol. 47, No. 2, pp. 209–224.
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Sadovskii, A.P., Shcheglova, T.V. Solution of the center-focus problem for a nine-parameter cubic system. Diff Equat 47, 208–223 (2011). https://doi.org/10.1134/S0012266111020078
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DOI: https://doi.org/10.1134/S0012266111020078