Subha D. Puthankattil and  Paul K. Joseph,  Analysis of EEG Signals Using Wavelet Entropy and Approximate Entropy: A Case Study on Depression Patients .   journal   = {International Journal of Bioengineering and Life Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2014, vol. 91(7). 430 - 434
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9999038.