“Study the Effect of Addition of Some Oxides on the Mechanical properties on Unsaturated Polyester Resin Compsites”, IHJPAS, vol. 28, no. 2, pp. 307–316, Apr. 2017, Accessed: May 06, 2024. [Online]. Available: https://jih.uobaghdad.edu.iq/index.php/j/article/view/239