Kexin Yao, and Kexin Yao. “Constant Gravitational Mass of Moving Object and Variational Gravitational Field Deducing That Application Scope of General Theory of Relativity Is Limited”. Global Journal of Science Frontier Research 14, no. A4 (March 15, 2014): 1–6. Accessed May 3, 2024. https://journalofscience.org/index.php/GJSFR/article/view/1106.