Zaherunaja, Eymal Bashar Demmallino, Nazarudin and Andi Santi 2023. Waste-Derived Fuels as a Renewable Energy Source (Physical-Chemical Quantity-Quality) Compared to Coal . Migration Letters. 21, 1 (Oct. 2023), 442–450. DOI:https://doi.org/10.59670/ml.v21i1.5197.