Şahal, Hakan, and Ercan Aydoğmuş. “Use of Sunflower Seed Shells As Filler in Polyester Resin and Characterization of Obtained Composite”. International Conference on Engineering, Natural and Social Sciences 1 (April 14, 2023): 233–236. Accessed July 3, 2024. https://as-proceeding.com/index.php/icensos/article/view/445.