AMRINA, Uly; FIRMANSYAH, Helmy. Analysis of Defect and Quality Improvement for O Ring Product Through Applying DMAIC Methodology. Jurnal PASTI (Penelitian dan Aplikasi Sistem dan Teknik Industri), Jakarta, Indonesia, v. 13, n. 2, p. 136–148, 2019. DOI: 10.22441/pasti.2019.v13i2.003. Disponível em: https://publikasi.mercubuana.ac.id/index.php/pasti/article/view/4051. Acesso em: 3 jun. 2026.