4Huang Norden E.,Shen Zheng,Long Steven R.,Wu Manli C.,Shih Hsing H.,Zheng Quanan,Yen Nai-Chyuan,Tung Chi Chao,Liu Henry H.The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis[J].Proceedings of the Royal Society A: Mathematical Physical and Engineering Sciences.1998(1971)
