WASET
    R. I. Khrapko,  The Relationship between the Energy of Gravitational Field and the Representative Pseudotensor.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2018, vol. 140(8). 568 - 572
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10009409.