H. Salih , Abdul Rahman, Majed M. Jarad, and Fouad M. Abdulla. “The Orbital Elements Variation of the Moon Through 2000-2100”. Iraqi Journal of Science 57, no. 1B (February 8, 2023): 530–539. Accessed January 9, 2026. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9256.