Yousif, Mohammed A., and Abdul-Rahman H. Saleh. “Evaluation of Orbital Maneuvers for Transition from Low Earth Orbit to Geostationary Earth Orbit”. Iraqi Journal of Science 59, no. 1A (January 30, 2018): 199–208. Accessed June 8, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/147.