PRODUCTIVITY IMPROVEMENT OF HIGH END CNC MACHINES BY DMAIC METHODOLOGY. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT, [S. l.], v. 3, n. 2, p. 23–37, 2017. Disponível em: https://ijerat.com/index.php/ijerat/article/view/203.. Acesso em: 3 may. 2024.