中国科学院数学与系统科学研究院期刊网
AMS
Degenerate Orbit Flip Homoclinic Bifurcations with Higher Dimensions
Ran Chao WU, Jian Hua SUN
Acta Mathematica Sinica . 2006, (6): 1651 -1656 .  DOI: 10.1007/s10114-005-0705-3