Mohamed Sanad and  Noha Hassan ,  A Multiple Beam LTE Base Station Antenna with Simultaneous Vertical and Horizontal Sectorization .   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2018, vol. 133(1). 86 - 92
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10008490.