Amer M. Ibrahim, Nazar K. Ali, and Wissam D. Salman. “Finite Element Analysis of Reinforced Concrete Slabs With Spherical Voids”. Diyala Journal of Engineering Sciences 6, no. 4 (December 1, 2013): 15–37. Accessed November 21, 2024. https://mail.djes.info/index.php/djes/article/view/495.