M. A. Al-Fakih, F. Ahmad, N. M. Lazim, A. H. D. K. Rasangika, and R. J. Varley, “Influence of GNP and CB Toughening on the Physical and Mechanical Properties of Hybrid Fiber Epoxy Composites Fabricated with Vacuum Infusion Molding”, Eng. Technol. Appl. Sci. Res., vol. 15, no. 6, pp. 28447–28453, Dec. 2025.