LEE, J. .; YUVAMITRA, K. .; GUIBERTEAU, K. . Six-Sigma Approach to Energy Management Planning. Strategic Planning for Energy and the Environment, [S. l.], v. 33, n. 3, p. 23–40, 2023. Disponível em: https://journals.riverpublishers.com/index.php/SPEE/article/view/19743. Acesso em: 28 apr. 2026.