Hossein Mardani and  Neil Buchanan and  Robert Cahill and  Vincent Fusco,  Impedance Matching of Axial Mode Helical Antennas.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2021, vol. 173(5). 205 - 208
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10012027.