PURBA, H. H. Reducing The Operational Stop Time of Hauller Komatsu Hd465-7 by Using the Six Sigma’s Approach in PT X. ComTech: Computer, Mathematics and Engineering Applications, [S. l.], v. 7, n. 2, 2016. DOI: 10.21512/comtech.v7i2.2245. Disponível em: https://journal.binus.ac.id/index.php/comtech/article/view/2245. Acesso em: 28 mar. 2025.