Zulkarnaen, I., H. Kurnia, B. Saing, A. Apriyani, and A. Nuryono. “Reduced Painting Defects in the 4-Wheeled Vehicle Industry on Product Type H-1 Using the Lean Six Sigma-DMAIC Approach”. Jurnal Sistem Dan Manajemen Industri, Vol. 7, no. 2, Dec. 2023, pp. 179-92, doi:10.30656/jsmi.v7i2.7512.