Saad Mutashar and  M. A. Hannan and  S. A. Samad and  A. Hussain,  Efficiency Improvement of Wireless Power Transmission for Bio-Implanted Devices.   journal   = {International Journal of Biomedical and Biological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2013, vol. 84(12). 799 - 802
    [viewed 15 October 2019]. Available from: https://publications.waset.org/pdf/9996625.