共 50 条
- [33] Solution of the center-focus problem for a cubic system reducible to a lienard system Differential Equations, 2006, 42 : 10 - 25
- [34] Solution of the center-focus problem for a nine-parameter cubic system Differential Equations, 2011, 47
- [35] THE CENTER-FOCUS PROBLEM AND BIFURCATION OF LIMIT CYCLES IN A CLASS OF 7TH-DEGREE POLYNOMIAL SYSTEMS JOURNAL OF APPLIED ANALYSIS AND COMPUTATION, 2016, 6 (03): : 817 - 826
- [37] Center-focus problem and limit cycles bifurcations for a class of cubic Kolmogorov model Nonlinear Dynamics, 2013, 72 : 197 - 206
- [40] The Center-Focus Problem for a System with Homogeneous Nonlinearities in the Case of Zero Eigenvalues of the Linear Part Differential Equations, 2003, 39 : 155 - 164