WASET
    M. Y. Ismail and  Arslan Kiyani,  Characterization of Printed Reflectarray Elements on Variable Substrate Thicknesses.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 86(2). 312 - 316
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/9997563.