Rosyidi, Edwar, Aprianto Wibisono, Rohmat Setiawan, Noviani Putri Sugihartanti, Januar Parlaungan Siregar, and Hafiidz Satria Pratama. “Reducing Reject Cotter Valve Skyrocketing Cylinder Head Parts in Retainer Press Machine Process in the Automotive Industry”. Operations Excellence: Journal of Applied Industrial Engineering 17, no. 1 (April 16, 2025): 59–68. Accessed June 4, 2026. https://publikasi.mercubuana.ac.id/index.php/oe/article/view/31269.