[1]Wiggins S. Global Bifurcation and Chaos.New York: Springer Verlag,  1988

[2]Wiggins S, Holmes P. Homoclinic orbits in slowly varying oscillators.SIAM J Math Anal, 1987,18(3): 612-629

[3]Yagasaki K. The method of Melnikov for perturbations of multi degree of freedom Hamiltionian systems. Nonlinearity, 1999,12:799-822

[4] Huang D, Liu Z, Cheng Z.  Global dynamics near the resonance in the Sine Gordon equation. J Shanghai Univ, 1998,2:259-261

[5]Zhu D M.  Problems in homoclinic bifurcations with higher dimensions. Acta Math Sinica,1998,14(3):341-352

[6]Zhu D M, Xia Z H. Bifurcations of heteroclinic loops.  Science in China,  1998, 41(8):837-848

[7]朱德明, 韩茂安. 快变量空间的同宿轨道分支. 数学年刊, 2002, 23(4):429-438

[8]Wiggin S. Introduction to Applied Nonlinear Dynamical Systems and Chaos. New York: Springer Verlag, 1991.