中国科学院数学与系统科学研究院期刊网
The Uniqueness of Limit Cycles from Poincare Bifurcation of Lienard Equation
Xi Shun YUE
Acta Mathematica Sinica, Chinese Series . 2005, (2): 377 -384 .  DOI: 10.12386/A2005sxxb0045