Shuka, Hayder Al-, and Wajidi Wisam ِ Al-. “Stress Analysis of Guide Rails of Elevators”. Al-Khwarizmi Engineering Journal 5, no. 3 (September 1, 2009): 38–50. Accessed January 4, 2026. https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/570.