FADILL, A. Analisis Akar Penyebab dan Usulan Perbaikan Cacat Scratch Pada Produk Exhaust Gas Recirculation (EGR) dengan Pendekatan Six Sigma DMAIC. RIGGS: Journal of Artificial Intelligence and Digital Business, [S. l.], v. 5, n. 1, p. 15682–15693, 2026. DOI: 10.31004/riggs.v5i1.8391. Disponível em: https://journal.ilmudata.co.id/index.php/RIGGS/article/view/8391. Acesso em: 2 may. 2026.