JIHAN SHOFA, Mohamad; GUNAWAN, Hadi. Implementasi Six Sigma untuk Perbaikan Produk Nickel Pig Iron. Jurnal Sistem dan Manajemen Industri, [S. l.], v. 1, n. 1, p. 29–34, 2017. DOI: 10.30656/jsmi.v1i1.171. Disponível em: https://e-jurnal.lppmunsera.org/index.php/JSMI/article/view/171. Acesso em: 7 apr. 2025.