Wei-Chih Tang and  Shih-Wei Lu and  Chih-Mong Tsai and  Cheng-Yan Kao and  Hsiu-Hui Lee,  Harmonic Parameters with HHT and Wavelet Transform for Automatic Sleep Stages Scoring.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2007, vol. 9(9). 2722 - 2725
    [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/3865.