C. Elavarasi and  T. Shanmuganantham,  Parametric Analysis of Water Lily Shaped Split Ring Resonator Loaded Fractal Monopole Antenna for Multiband Applications.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2016, vol. 117(9). 1256 - 1259
    [viewed 22 October 2019]. Available from: https://publications.waset.org/pdf/10005483.