Fadhil, H., and A. H. Al-Ahmed. “Empirical Equations for Analysis of Two-Way Reinforced Concrete Slabs”. Al-Khwarizmi Engineering Journal, Vol. 8, no. 3, Aug. 2012, pp. 24 -39, https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/136.