中国科学院数学与系统科学研究院期刊网
The Isochronous Center on Center Manifolds for Three Dimensional Differential Systems
Wen Tao HUANG, Qin Long WANG, Chao Xiong DU
Acta Mathematica Sinica, Chinese Series . 2024, (5): 995 -1008 .  DOI: 10.12386/B20210641