Singh, Shiv Shakti. “DARK ENERGY AND THE ACCELERATING UNIVERSE: CHALLENGES IN COSMOLOGY”. International Journal of Research -GRANTHAALAYAH 5, no. 5 (May 31, 2017): 410–414. Accessed October 25, 2025. https://granthaalayahpublication.org/journals/granthaalayah/article/view/5982.