G. Venkata Hari Prasad and  P. Rajesh Kumar,  Wavelet Feature Selection Approach for Heart Murmur Classification.   journal   = {International Journal of Biomedical and Biological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2015, vol. 99(3). 315 - 322
    [viewed 29 January 2020]. Available from: https://publications.waset.org/pdf/10002123.