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Tusen HUANG Qi ZHANG 《系统科学与复杂性》2007,20(3):461-469
A computable expression of the asymptotic expansion of the return map for a degenerate singular point of a class of planar differential system is given, and hence the stability and the type of the singular point can be decided. These results generalize the corresponding results in [Nonlinearity, 13 (2000), p.709]. 相似文献
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