WASET
    M. Yusefzad,  Investigating the Invalidity of the Law of Energy Conservation Based on Waves Interference Phenomenon Inside a Ringed Waveguide.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2018, vol. 135(3). 66 - 69
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10008937.