WASET
    Petar Sarajcev and  Josip Vasilj and  Damir Jakus,  Statistical Description of Counterpoise Effective Length Based On Regressive Formulas.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 98(2). 155 - 161
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10000459.