KURNIA, Hibarkah; WIYATNO, Tri Ngudi; NUGROHO, Bayu Hari; NURYONO, Arif. Sigma level choice examination in executing incline Lean Six Sigma (LSS) within the material and item material industry. Operations Excellence: Journal of Applied Industrial Engineering, Jakarta, Indonesia, v. 17, n. 1, p. 90–104, 2025. DOI: 10.22441/oe.2025.v17.i1.134. Disponível em: https://publikasi.mercubuana.ac.id/index.php/oe/article/view/31990. Acesso em: 29 jun. 2026.