Jeffry, R. & Hadi, M. N. S. (2009). Improving the strength and ductility of high strength reinforced concrete beams. In a. R M. Ridzuan, M. Rozli, M. R. Md Zain & N. A. Yahaya (Eds.), 10th International Conference on Concrete engineering and Technology CONCRET ''09 (p. 22).
Jeffry, R. & Hadi, M. N. S. (2009). Improving the strength and ductility of high strength reinforced concrete beams. In a. R M. Ridzuan, M. Rozli, M. R. Md Zain & N. A. Yahaya (Eds.), 10th International Conference on Concrete engineering and Technology CONCRET ''09 (p. 22).