Zhang X, Zhao P. Unified Field Theory: Composition of the Universe, Spacetime Motion and the Invariance of the Speed of Light. Int J Phys Res Appl [Internet]. 2025 Jul. 21 [cited 2025 Oct. 11];8(7):222. Available from: https://www.physicsresjournal.com/ijpra/article/view/ijpra-aid1129