JAMAL , K. M.; KHDIR, S. L. . Used Gamma Control Chart on L.O.I of Cement Factor. The Scientific Journal of Cihan University– Sulaimaniya, [S. l.], v. 5, n. 2, p. 49-64, 2022. DOI: 10.25098/5.2.18. Disponível em: https://journal.sulicihan.edu.krd/index.php/sjcus/article/view/90. Acesso em: 12 feb. 2026.