Abdul Ameer Mehdi H. MATHEMATICAL FINITE ELEMENT MODEL FOR GENERAL ANALYSIS OF DOUBLE CURVED SHELL ACCORDING TO STRAIN BASED APPROACH. J. eng. sustain. dev. 2017;21(6):20-38. Accessed April 19, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/483