Al-massoud توفيق, and Alfakhoury عمار عبدالبر. “Designing of Classic Control System to Drive a Bridge Cranes”. University of Aden Journal of Natural and Applied Sciences 19, no. 2 (August 31, 2015): 293–305. Accessed April 3, 2025. https://uajnas.adenuniv.com/index.php/uajnas/article/view/293.