COOPER, C.J.; LAING, C.A. A macro analysis of crop residue and animal wastes as a potential energy source in Africa. Journal of Energy in Southern Africa, [S. l.], v. 18, n. 1, p. 10–19, 2007. DOI: 10.17159/2413-3051/2007/v18i1a3339. Disponível em: https://energyjournal.africa/article/view/3339. Acesso em: 6 may. 2024.