WASET
    Abdul Hafiizh and  Shigeki Obote and  Kenichi Kagoshima,  Multiple Subcarrier Indoor Geolocation System in MIMO-OFDM WLAN APs Structure.   journal   = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2009, vol. 34(10). 830 - 836
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/8621.