M. A. M. ALTAEE, B. Improving Quality Of Design By Using Lean Six Sigma (LSS) Methodology Technique: An Analytical Study For Managers Opinions at State Company for Leather Industries - Baghdad. TANMIYAT AL-RAFIDAIN, [S. l.], v. 38, n. 121, p. 133–154, 2019. DOI: 10.33899/tanra.2019.161167. Disponível em: https://tanmiyat.uomosul.edu.iq/index.php/tanmiyat/article/view/29704. Acesso em: 8 sep. 2025.