M. . A. Shalall and M. . A. Louis, “Non-Linear Analysis of Simply Supported Composite Beam by Finite Element Method”, J. eng. sustain. dev., vol. 9, no. 4, pp. 8–22, Dec. 2005, Accessed: May 09, 2025. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1818