Qasem Fadhel, Afya, and Widad Hamdi Jassim. “Fabrication of Natural Gelcoats (Epoxy Pumpkin Peels Fibers) Composites With High Mechanical and Thermal Properties”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 35, no. 4, Oct. 2022, pp. 21-36, https://doi.org/10.30526/35.4.2876.