Beckwith, A. W., and S. S. Moskaliuk. “Generalized Heisenberg Uncertainty Principle in Quantum Geometrodynamics and General Relativity”. Ukrainian Journal of Physics 62, no. 8 (December 13, 2018): 727. Accessed November 21, 2024. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018650.