Multiple Limit Cycles Bifurcation From the Degenerate Singularity for a Class of Three-dimensional Systems

Qin-long WANG, Wen-tao HUANG, Yi-rong LIU

Acta Mathematicae Applicatae Sinica(English Series) . 2016, (1): 73 -80 . DOI: 10.1007/s10255-015-0510-4