Surya, I., and N. Hayeemasae. “Effects of TESPT-Silane Coupling Agent on Torque Properties and Degree of Filler Dispersion of Silica Filled Natural Rubber and Epoxidized Natural Rubbers Compounds”. Simetrikal: Journal of Engineering and Technology, vol. 1, no. 2, Sept. 2019, pp. 79-86, doi:10.32734/jet.v1i2.1211.