Mendes da Conceição AC, Martins Ferreira Major MJ. Use of the Six Sigma by the 500 Largent Companies in Portugal. Rev. Bras. Gest. Neg. [Internet]. 2011 Oct. 10 [cited 2024 May 1];13(40):312-31. Available from: https://rbgn.fecap.br/RBGN/article/view/922