E. . S. Al-Ameen, “An Idea for Coupling Two Engines to Drive a Generating Head Using Epicyclic Gear Train”, J. eng. sustain. dev., vol. 12, no. 2, pp. 18–30, Jun. 2008, Accessed: May 10, 2025. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1661