@article{KYB_2013__49_6_a6,
     author = {Liang, Hongtao and Tang, Yanxia and Li, Li and Wei, Zhouchao and Wang, Zhen},
     title = {Degenerate {Hopf} bifurcations and the formation mechanism of chaos in the {Qi} {3-D} four-wing chaotic system},
     journal = {Kybernetika},
     pages = {935--947},
     publisher = {mathdoc},
     volume = {49},
     number = {6},
     year = {2013},
     mrnumber = {3182649},
     zbl = {1290.34050},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2013__49_6_a6/}
}