“Preliminary Study on Properties of Small Diameter Wild Acacia Mangium Species As Potential Biomass Energy Sources”. Journal of Tropical Resources and Sustainable Science (JTRSS) 4, no. 2 (December 30, 2016): 138–144. Accessed August 22, 2025. https://journal.umk.edu.my/index.php/jtrss/article/view/623.