le Roux, Lukas J., et al. “Reduction in Air Pollution Using the ‘basa Njengo magogo’ Method and the Applicability to Low-Smoke Fuels”. Journal of Energy in Southern Africa, vol. 20, no. 3, Aug. 2009, pp. 3-10, doi:10.17159/2413-3051/2009/v20i3a3303.