中国科学院数学与系统科学研究院期刊网
AMS
Bifurcations of Limit Cycles from a Quintic Hamiltonian System with a Heteroclinic Cycle
Li Qin ZHAO, De Ping LI
Acta Mathematica Sinica . 2014, (3): 411 -422 .  DOI: 10.1007/s10114-014-2615-8