S. Pradittara and  M. Uthansakul and  P. Uthansakul,  Performance Evaluation of 2×2 Switched Beam Antennas with Null Locating for Wireless Mesh Networks.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2009, vol. 27(3). 560 - 564
    [viewed 06 October 2022]. Available from: https://publications.waset.org/pdf/9578.