KABUYA, K.; OLANREWAJU, O. A.; LAZARUS, I. J. IMPROVING ENERGY USAGE IN COMMERCIAL BUILDINGS USING SIX SIGMA DMAIC. The South African Journal of Industrial Engineering, [S. l.], v. 34, n. 2, p. 138–151, 2023. DOI: 10.7166/34-2-2392. Disponível em: http://sajie.journals.ac.za/pub/article/view/2392. Acesso em: 20 may. 2024.