Six Sigma in the Cleveland Clinic Call Center. Science, Technology and Social Development Proceedings Series, [S. l.], v. 2, p. 15–23, 2024. DOI: 10.70088/9qr1mr44. Disponível em: https://soapubs.com/index.php/STSDPS/article/view/170.. Acesso em: 20 nov. 2024.