ناصر ع., حويجة ب., & ابو بالا ر. . (2020). Analytical Study to Calculate the Seismic Forces Modification Coefficient R for the Existing RC Dual Structural Systems. Tishreen University Journal -Engineering Sciences Series,, 42(5). Retrieved from https://journal.tishreen.edu.sy/index.php/engscnc/article/view/10065