MENDOZA MENDOZA, A. . Six sigma quality control and multivariate capability indicators to assess customer service in a mobile phone company. Dimensión Empresarial, [S. l.], v. 21, n. 3, 2025. Disponível em: http://ojs.uac.edu.co/index.php/dimension-empresarial/article/view/3813. Acesso em: 5 aug. 2025.