Osabohien, Emmanuel, Ufuoma Soya, and Nduka Obichukwu Ojeifo. “Characteristics of Natural Rubber – Carbonized Pawpaw Seed Composites”. International Journal of Biological and Chemical Sciences 14, no. 8 (December 9, 2020): 2951–2964. Accessed September 12, 2026. https://www.ajol.info/index.php/ijbcs/article/view/202075.