Ohan, Armen. “The Observation of the Dark Matter of the Universe through the Concept of the Theory of the Relativity: A Recent Study”. Research Trends and Challenges in Physical Science Vol. 2 (October 27, 2021): 30–64. Accessed June 13, 2026. https://stm.bookpi.org/RTCPS-V2/article/view/4490.