WASET
    Chang-Bin Ha and  Yong-Jun Kim and  Dong-Hyun Ha and  Hyoung-Kyu Song,  Improved Wi-Fi Backscatter System for Multi-to-Multi Communication.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2015, vol. 104(8). 785 - 789
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10001961.