Nur Amalina Shairah Abdul Samat, Nur, Siti Aishah Zulkafly, Ummie Zulaikha Kamarul Jaman, Nur Syuhada Ahmad Zauzi, Md Rezaur Rahman, and Rubiyah Baini. “Characteristics Analysis of Bio-Based Silica Extracted from Sarawak Palm Oil Waste”. International Journal of Engineering and Technology 7, no. 3.18 (August 2, 2018): 94–96. Accessed May 12, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/16685.