Wibowo, Santo, and Humiras Hardi Purba. “Improving Defect Tire Curing Process With Six Sigma Method at Tire Manufacturing Industry”. Proceeding Mercu Buana Conference on Industrial Engineering 1, no. 1 (January 31, 2019): 20–27. Accessed May 29, 2026. https://training-ojs3-publikasi.mercubuana.ac.id/index.php/mbcie/article/view/20318.