Hashim, Shams Abd Al-Salam, and Ahmed K. Hammoudi. “Design and Characterization of Second Order Sliding Mode Controller for Pendulum System”. Al-Nahrain Journal for Engineering Sciences 24, no. 1 (July 7, 2021): 40–51. Accessed May 30, 2026. https://nahje.journalpath.com/nahje/article/view/250.