Ipilakyaa, Tertsegha. “Evaluation of Physical and Dynamic Mechanical Properties of Coconut Husk Ash (CHA) Reinforced Polyester Composites”. Journal of Mechanical and Energy Engineering 4, no. 4 (April 20, 2021): 315-324. Accessed March 29, 2024. https://jmee.tu.koszalin.pl/ojs/index.php/jmee/article/view/230.