Sulaiman, W., وفاء, S. Ali, and سهام. “Effect of Addition of SiMa Filling to Styrene - Butadiene (SBR) Rubber on Its Mechanical Properties and Homogeneity”. Journal of Education and Science (JES), vol. 19, no. 3, Apr. 2007, pp. 121-6, doi:10.33899/edusj.2007.51327.