H. . Abdulameer Mehdi, “Derivation of Annular Plate Sector Element for General Bending Analysis”, J. eng. sustain. dev., vol. 19, no. 1, pp. 14–30, Jan. 2015, Accessed: Feb. 05, 2025. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/683