Ibrahim, R. (2023) “Calculate the Longitude and Orbital Motion for Amaletha, Europa, Ganymede and Callisto Satellites”, Iraqi Journal of Science, 55(2B), pp. 839–844. Available at: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11854 (Accessed: 7 December 2025).