حامد محمد أبوبكر و أبوبكر علي يوسف. “Studying the Influence of Damping Factor on Transitional Vibrations for Spring Systems Using Simulation Technique”. Journal of Pure & Applied Sciences 17, no. 1 (July 30, 2018). Accessed July 17, 2024. https://sebhau.edu.ly/journal/jopas/article/view/69.