Zhou, P. P.; Yamba, F. D.; Lloyd, P.; Nyahuma, L.; Mzezewa, C.; Kipondya, F.; Keir, J.; Asamoah, J.; Simonsen, H. Determination of Regional Emission Factors for the Power Sector in Southern Africa. J. energy South. Afr. 2009, 20, 11-18.