K. Zeki, Mohammed, and محمد. “A Study of Some Cosmological Parameters at Different Eras of the Universe”. Rafidain Journal of Science 25, no. 1 (June 24, 2025): 108–119. Accessed August 14, 2025. https://ojs.uomosul.edu.iq/index.php/rsci/article/view/12275.