6Tarun Madan,Rajeev Agarwal,Swamy M N S.Compression of long-term EEG using power spectral Density.Proceedings of the 26th Annual International conference of the IEEE EMBS San Francico,CA,USA.September 1-5,2004.
7He WX,Yan XG,Chen XP,et al.Nonlinear Feature Extraction of Sleeping EEG Signals.Proceedings of the 2005 IEEE,Engineering in Medicine and Biology 27th Annual Conference Shanghai,China,1-4,2005.
8Wang Yuerong,Wang wei,Liu Yuelei,et al.Feature Extracting of weak signal in Real-Time sleeping EEG with Approximate Entropy and Bispectrum Analysis.Institute of Biomedical Engineering,School of Information science and Engineering Lanzhou University.