L. Saadoon Al-Yassri, A. Mahdi Al-Khekany, and H. Satea Abbas, “Experimental Study of Replacement the Tension Reinforcing Bars in Concrete Beams by Steel Pipes”, IJET, vol. 7, no. 4.20, pp. 229–234, Nov. 2018, doi: 10.14419/ijet.v7i4.20.25931.