Global Phase Portraits of Uniform Isochronous Centers System of Degree Six with Polynomial Commutator

Li-na GUO, Ai-yong CHEN, Shuai-feng ZHAO

Acta Mathematicae Applicatae Sinica(English Series) . 2024, (3): 577 -599 . DOI: 10.1007/s10255-024-1081-z