Jemmali, Mahdi, Loai Kayed Bani Melhim, Sayer Obaid B. Alharbi, and Abdullah Saeed Bajahzar. “Lower Bounds for Gas Turbines Aircraft Engines”. Communications in Mathematics and Applications 10, no. 3 (September 30, 2019): 637–642. Accessed October 26, 2025. https://www.journals.rgnpublications.com/index.php/cma/article/view/1218.