Malatji, P., Mamphweli, N. S., & Meincken, M. (2011). The technical pre-feasibility to use briquettes made from wood and agricultural waste for gasification in a downdraft gasifier for electricity generation. Journal of Energy in Southern Africa, 22(4), 2–7. https://doi.org/10.17159/2413-3051/2011/v22i4a3224