Muter, Mohammed A., and Qusay K. Mugar. “Study the Effect of Fillers and Thermoplastics Content in the Mechanical Properties of Natural Rubber Vulcanized”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 28, no. 2, Apr. 2017, pp. 350-63, https://jih.uobaghdad.edu.iq/index.php/j/article/view/244.