再论一类二次系统的无界双中心周期环域的Poincare分支
谭欣欣, 冯恩民, 沈伯骞
STUDY ON THE POINCARE BIFURCATION OF QUADRATIC SYSTEM WITH TWO CENTERS AND TWO UNBOUNDED HETEROCLINIC LOOPS ONCE AGAIN
Xin Xin TAN, En Min FENG, Bo Qian SHEN
应用数学学报
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2004, (2): 300
-309
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DOI: 10.12387/C2004035
