共 27 条
[4]
LIMIT CYCLES AND CENTERS IN A CUBIC PLANAR SYSTEM
[J].
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS,
2010, 20 (12)
:4127-4135
[5]
Christopher C, 2003, J DYN CONTROL SYST, V9, P311, DOI 10.1023/A:1024643521094
[6]
Christopher C., 2004, Qual. Theory Dyn. Syst., V5, P11
[8]
Dulac H., 1908, Bull. Sci. Math. Ser., V32, P230
[9]
INTEGRABILITY AND BIFURCATIONS OF LIMIT CYCLES IN A CUBIC KOLMOGOROV SYSTEM
[J].
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS,
2013, 23 (04)