Zaherunaja, Eymal Bashar Demmallino, Nazarudin, and Andi Santi. “Waste-Derived Fuels As a Renewable Energy Source (Physical-Chemical Quantity-Quality) Compared to Coal”. Migration Letters 21, no. 1 (October 25, 2023): 442–450. Accessed December 22, 2024. https://migrationletters.com/index.php/ml/article/view/5197.