Chin. Phys. B
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Chin. Phys. B  2015, Vol. 24 Issue (6): 060504    DOI: 10.1088/1674-1056/24/6/060504
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A circular zone counting method of identifying a Duffing oscillator state transition and determining the critical value in weak signal detection
Li Meng-Ping, Xu Xue-Mei, Yang Bing-Chu, Ding Jia-Feng
School of Physics and Electronics, Central South University, Changsha 410083, China

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