KEELEY, A.; VAN WAVEREN, C.; CHAN, K.-Y. A longitudinal study of the indicators and factors for successful six sigma deployment in the South African mining industry. The South African Journal of Industrial Engineering, [S. l.], v. 24, n. 1, p. 167–191, 2013. DOI: 10.7166/24-1-654. Disponível em: https://sajie.journals.ac.za/pub/article/view/654. Acesso em: 29 apr. 2024.