EBERLY, D. A. . Building Energy Cost Savings From Six-Sigma Process Improvement Methods . Strategic Planning for Energy and the Environment, [S. l.], v. 26, n. 1, p. 59–70, 2023. Disponível em: https://journals.riverpublishers.com/index.php/SPEE/article/view/20089. Acesso em: 28 apr. 2026.