ZIMUNYA , Willoughby; MHLANGA, Aaron. Energy Efficiency in Existing Buildings that were Constructed before the Green Building Agenda was Mooted. Kuveza neKuumba: The Zimbabwe Ezekiel Guti University Journal of Design, Innovative Thinking and Practice, [S. l.], v. 4, n. 1 and 2, p. Pages: 131–157, 2025. DOI: 10.71458/2srk4t35. Disponível em: http://journals.zegu.ac.zw/index.php/knk/article/view/305.. Acesso em: 29 may. 2025.