“Influence Calcium Carbonate Nano-particles CaCO3 on Crack Growth Fatigue for NR Compound”, Int. J. Curr. Eng. Technol., vol. 5, no. 1, pp. 458–461, Feb. 2015, Accessed: Apr. 07, 2026. [Online]. Available: https://ijcet.evegenis.org/index.php/ijcet/article/view/1960