TANGWE, S.; KUSAKANA, K. Using statistical tests to compare the coefficient of performance of air source heat pump water heaters. Journal of Energy in Southern Africa, [S. l.], v. 33, n. 1, p. 40–51, 2022. DOI: 10.17159/2413-3051/2022/v33i1a7943. Disponível em: https://energyjournal.africa/article/view/7943. Acesso em: 20 may. 2022.